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7thlanguage Specifications
7thlanguage Specifications
7thlanguage is script language that create short story automatically.
I have designed and developed this 7thlanguage by myself.
7thlanguage has minimal functions for the generation of short story.
It had not functions like sound and graphics, or interactive operation.
But it has many kind of inventions for the generation of short story.
7thnovel has not "STOP" instruction, or "JUMP" instruction, so 7thlanguge is very peculiar language.
But many of programmers know well that these instructions sometimes cause tragedies.
And also short story never loops 7thlanguage has no loop instruction.
Source codes written in 7thlanguge are processed by 7thleader and create short stories actually.
For the help of reader "source code" and "generated text" are written in different color.
7thlanguage uses ASCII character set.
File format of the source code is "text file" separated by CRLF code.
Following characters are reserved as control code
{}[]<>!#=&+-;$\/|
Following words are also reserved and can not use on first position of text line.
title
end
select
scene
set
action
Most simple example of 7thlanguage source code goes like this
(sample1.7th)
title morning_greeting
Good morning.
It's a fine day today, isn't it.
end
Using this code 7thleader generate following texts.
---------------------- 7threader English Version -----------------------
Good morning.
It's a fine day to day, isn't it.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
key word "title" means begining of story.
"morning_greeting" after "title" is name of scenario.
Following text
Good morning.
It's a fine day today, isn't it.
is a contents of story.
key word "end" means end of scenario block started by key word "title"
messages
---------------------- 7threader English Version -----------------------
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
are automatically added by 7threader.
When the first colum of source code is ";", then this text line of source code is considered as comment line
(sample2.7th)
;***********************
;* What happened today *
;***********************
title go_to_University
I went to University and had a lecture today.
After lecture I had chatted with my friend
end
In order to create multi story, use title statement as entry point of each story.
(sample3.7th)
title go_to_University
I went to University and had a lecture today.
After lecture I had chatted with my friend
end
title go_to_movie
I went go movie with my friend.
After watching movie we went Italian restaurant.
end
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university.
end
Then each story will be displayed random.
Parts of scenario except entry point of story are described using "scene" instruction.
example
scene invited_to_a_party
I was invited to a party when I was going back home.
We all entered a tavern just near the station.
end
scene drink_at_tavern
Inside the tavern was decorated like folk handicraft style.
Boys are seems to be often here to have a drink.
end
name of scene must be given to distinguish each scene.
scenes are called from another scenes statement or title statement.
sample4.7th
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university.
{invited_to_a_party}
{drink_at_tavern}
end
control of program is return to caller like subroutine in c language.
But "return" statement is not defined at 7thlanguage.
So control will return only when it comes the end of scene statements.
Null statement cannot be defined.
scene invited_to_a_party
I was invited to a party when I was going back home.
We all entered a tavern just near the station.
end
this statements are not allowed.
and also null statement like
scene invited_to_a_party
end
is not allowed
Chapter number is defined preliminary as scene statement.
Name of Chapter number is defined as "No".
Chapter number is used as follows.
sample5.7th
title go_to_picnic
{No}
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university.
{No}
{invited_to_a_party}
{drink_at_tavern}
end
Result texts are following
---------------------- 7threader English Version -----------------------
1.
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university.
2.
I was invited to a party when I was going back home.
We all entered a tavern just near the station.
Inside the tavern was decorated like folk handicraft style.
Boys are seems to be often here to have a drink.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.01 ---------
If same texts are generated every time, reader may not found interest in these texts.
So I had invented technique to generate different texts each time.
Use ( | ) character as control character.
sample6.7th
title I_had_attended_party
I had attended a party (to watch cherry blossoms|to celebrate birthday).
end
In this case two different texts are generated using 7threader as follows.
---------------------- 7threader English Version -----------------------
I had attended a party to watch cherry blossoms.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
---------------------- 7threader English Version -----------------------
I had attended a party to celebrate birthday.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
More complex case is describe as follows.
sample7.7th
title I_had_attended_party
(Today|This afternoon) I had attended (a party (to watch cherry blossoms|to celebrate birthday)|dance lesson in gym).
end
sample8.7th
Null text is allowed as follows
title I_had_attended_party
(Today |)I had attened a party to watch cherry blossoms.
end
Continuous line
To connect two or more lines use \ charactor at the end of each line.
sample9.7th
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university, \
but I didnt know any of them.
end
are considered as same source code as
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university, but I didnt know any of them.
end
To insert new line in the middle of text use / character
sample10.7th
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university,/but I didnt know any of them.
end
are 7thleader generate text as follows
---------------------- 7threader English Version -----------------------
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university,
but I didnt know any of them.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Text line can include / character only like following.
sample11.7th
title go_to_picnic
I went to picnic with my friends.
//
Cherry blossoms were very beautiful.
Many boys had joined from another university,/but I didnt know any of them.
end
and 7threader generate as follows
---------------------- 7threader English Version -----------------------
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university,
but I didnt know any of them.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
When 7threader generate texts form scenario source codes, new line code is added at the end of each text line.
In order to neglect this new line code, use - character at the end of text line.
sample12.7th
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university, -
but I didn't know any of them.
end
7thleader generate text as follows
---------------------- 7threader English Version -----------------------
I went to picnic with my friends.
Cherry blossoms were very beautiful.
Many boys had joined from another university, but I didn't know any of them.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
When \ character is used to neglect new line code, scenario source codes are connected physically, in the source code.
But when use - character, scenario source code are not connected physically, but only neglect new line code as result of 7threader.
So - character can use at the end of text line of scenario and connect lines beyond scene statement.
sample13.7th
title go_to_picnic
I went to picnic with my friends.
Cherry blossoms were very beautiful. -
{Many_boys_had_joined}
end
scene Many_boys_had_joined
Many boys had joined from another university, but I didn't know any of them.
end
---------------------- 7threader English Version -----------------------
I went to picnic with my friends.
Cherry blossoms were very beautiful. Many boys had joined from another university, but I didn't know any of them.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
To select a scene from given scenes use select statement.
Select statement is described as follows
sample25.7th
scene invited_to_party
I was invited to a party.
end
scene invited_to_drink
I was invited to have a drink
end
select case_of_intivitaion
invited_to_partiy
invited_to_drink
end
title I_had_drunk
{case_of_invitation}
I had drunk too much and could not walk alone.
end
"case_of_invitation" is a name of select statement.
"invited_to_party" and "invited_to_drink" are name of scene that are to be selected.
Method To call select statment is same as to call scene statment as follows.
{case_of_invitation}
and control is return to caller as subroutine.
7threader generate two cases as follows
---------------------- 7threader English Version -----------------------
I was invited to a party.
I had drunk too much and could not walk alone.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
---------------------- 7threader English Version -----------------------
I was invited to have a drink
I had drunk too much and could not walk alone.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
7thlanguage can use character variable
sample26.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl who was next at the entrance examination.
[My friend=Reiko]
Her name was [My friend] and wearing colorful one piece.
end
Using this source code 7threader generate texts as follows
---------------------- 7threader English Version -----------------------
When ceremony was finished I was called by a girl who was next at the entrance examination.
Her name was Reiko and wearing colorful one piece.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
"My friend" is a name of character valuable.
Statement "[My friend=Reiko]" means substitute a character value "Reiko" for the valuable "My friend";
This statement indicate a substitution only and do not displayed it self when 7thleader generate text.
Variable "My friend" does not need to be declared preliminary.
Null character can be substituted like
[My freiand=]
and this means Variable "My friend" has null value.
Also value "My friend" has null value when substitution is not executed.
When the Value of character valuable is null then 7thleader displays value name instead of null value.
sample27.7th
title having_a_tea
I and [My friend] entered the tea room near the University after entrance ceremony.
end
Using this source code 7thleader generate texts as follows
---------------------- 7threader English Version -----------------------
I and My friend entered the tea room near the University after entrance ceremony.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Substitution for character variable can be executed with parentheses
[my friend=Reiko|Yosie]
[my friend=(Reiko|Yosie)]
each case has different effect of substitution.
sample28.7th
title having_a_tea
[my friend=Reiko|Yosie]
I and [my friend] entered the tea room near the University after entrance ceremony.
end
---------------------- 7threader English Version -----------------------
I and Reiko entered the tea room near the University after entrance ceremony.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
In this case parentheses are processed when substitution is executed.
But another case of following
sample29.7th
title having_a_tea
[my friend=(Reiko|Yosie)]
We entered the tea room near the University after entrance ceremony.
[my friend] said "To day is very hot" and put off her jacket.
I wanted to have vanilla shake but [my friend] ordered coffee saying "You would like to have coffee, don't you?".
[my friend] said "I wonder when lecture begin" putting sugar to her coffee.
end
---------------------- 7threader English Version -----------------------
We enter the tea room near the University after entrance ceremony.
Yosie said "To day is very hot" and put off her jacket.
I wanted to have vanilla shake but Reiko ordered coffee saying "You would like to have coffee, don't you?".
Yosie said "I wonder when lecture begin" putting sugar to her coffee.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
In this case parentheses are processed when character variable "my friend" is displayed its value.
So It may have different value each time when it displayed.
Each character variable has its own counter.
This counter counts how many times this variable is displayed in the generated text.
At first this counter has value of zero, and was incremented each time when it was displayed as variable.
In order to refer this counter use $ character in front of variable name like this
$my friend
And this value can refer in the decision statement that will be explained later.
When Null was substituted to character variable, counter of this variable is reset to zero.
7thlanguage can use Numeric variable.
Numeric values are stored as double precision.
Floating and integer values are also stored as double precision.
Name of numeric value is start with % character as follows
%age of my friend
Numeric variable can display its value using [] as follows
[%age of my friend]
Calculation can be done like C language but method of calculations is restricted at the moment and can use following formulas only.
values showed below 10 can changed with another value
[%age of my friend++]
[%age of my friend--]
[%age of my friend+=10]
[%age of my friend-=10]
Numeric variable does not have counter of it self like character variable.
sample30.7th
title age_of_my_friend
[%age of my friend=18]
My friend is [%age of my friend] years old.
[%age of my friend++]
My friend well be [%age of my friend] years old next year.
[%age of my friend=20]
My friend is [%age of my friend] years old.
[%age of my friend--]
My friend was [%age of my friend] years old last year.
end
---------------------- 7threader English Version -----------------------
My friend is 18 years old.
My friend well be 19 years old next year.
My friend is 20 years old.
My friend was 19 years old last year.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
sample31.7th
title age_of_my_friend
[%age of my friend=18]
My friend is [%age of my friend] years old.
[%age of my friend+=10]
My friend well be [%age of my friend] years old ten years later.
[%age of my friend=20]
My friend is [%age of my friend] years old.
[%age of my friend-=10]
My friend was [%age of my friend] years old ten years ago.
end
---------------------- 7threader English Version -----------------------
My friend is 18 years old.
My friend well be 28 years old ten years later.
My friend is 20 years old.
My friend was 10 years old ten years ago.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Substitution and display of variable can be done simultaneously in the same text line.
sample32.7th
title meet_friend_at_ceremony
When ceremony was finished I was called by a girl who was next at the entrance examination.
Her[my friend=Reiko] name was [my friend] and wearing colorful one piece.
end
---------------------- 7threader English Version -----------------------
When ceremony was finished I was called by a girl who was next at the entrance examination.
Her name was Reiko and wearing colorful one piece.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Also different value can be substituted to same variable in one text line as follows.
Substitution and display are processed form top to bottom of text line.
sample33.7th
title meet_friend_at_ceremony
When ceremony was finished I was called by a girl who was next at the entrance examination.
Her[my friend=Reiko] name was [my friend] and introduced me her friend[my friend=Yosie] [my friend] coming with her.
end
---------------------- 7threader English Version -----------------------
When ceremony was finished I was called by a girl who was next at the entrance examination.
Her name was Reiko and introduced me her friend Yosie coming with her.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Substitution and parentheses ( | ) can be used together.
sample34.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl.
Her[my friend=Reiko|Sanae] name was [my friend] who was next at entrance examination.|She was[my friend=Yosie|Midori] senior who lives next door to my apartment.
[my friend] had dressed in colorful one piece.
end
In this case parentheses (|) outside of [] is processed at first.
so following statements are generated each time.
When entrance ceremony was finished I was called by a girl.
Her[my friend=Reiko|Sanae] name was [my friend] who was next at entrance examination.
[my friend] had dressed in colorful one piece.
When entrance ceremony was finished I was called by a girl.
She was[my friend=Yosie|Midori] senior who lives next door to my apartment.
[my friend] had dressed in colorful one piece.
and then substitution is processed next time as follows
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl.
Her name was Reiko who was next at entrance examination.
Reiko had dressed in colorful one piece.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl.
She was senior who lives next door to my apartment.
Midori had dressed in colorful one piece.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
Condition formula can be used using variable
sample35.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl.
Her[my friend=Reiko] name was [my friend] who was next at entrance examination.
{Dress_of_my_friend}
end
scene Dress_of_my_friend
She <my friend==Reiko>dressed in colorful one piece<my friend==Sanae>dressed in sober blue suit; and looked merrily.
end
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl.
Her name was Reiko who was next at entrance examination.
She dressed in colorful one piece and looked merily.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
condition formula
<my friend==Reiko>
is true when value of "my friend" is Reiko.
If true is judged following text next to this formula is displayed till next condition formula
Another decision
<my friend==Sanae>
is true when value of "my friend" is Sanae.
And if false then following text next to this formula does not displayed.
;
means a cancel of decision.
and following text next to ; are displayed
Decision is processed form top to bottom of text.
When condition formula had found, then value of condition was decided and if true display text following condition formula.
When it reached next formula, value of condition was decided also.
When it reached ";" character, it mean end of decision and following text are displayed normally.
Condition formula can be used with parentheses
sample37.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl.
Her[my friend=Reiko] name was [my friend] who was next at entrance examination.
{Dress_of_my_friend}
end
scene Dress_of_my_friend
She (<my friend==Reiko>dressed in colorful one piece<my friend==Sanae>dressed in sober blue suit; and looked merely|<my friend==Reiko>was from Koufu<my friend==Sanae>lived near here).
end
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl.
Her name was Reiko who was next at entrance examination.
She dressed in colorful one piece and looked merely.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl.
Her name was Reiko who was next at entrance examination.
She was from Koufu
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
At first step, parentheses are processed and two kind of text are generated randomly as follows
She <my friend==Reiko>dressed in colorful one piece<my friend==Sanae>dressed in sober blue suit; and looked merely
She <my friend==Reiko>was from Koufu<my friend==Sanae>lived near here.
and next step condition formulas are processed.
Scene is called with condition formula
sample38.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl.
{meet_with_friend}
{<my friend==Reiko>I_went_condominium<my friend==Yosie>I_went_apartment;I_went_back_my_apartment}
end
selece name_of_friend
meet_with_Reiko
meet_with_Yosie
end
scene meet_with_Reiko
[my friend=Reiko]
Her name was [my friend] and dressed in colorful one piece
end
scene meet_with_Yosie
[my friend=Yosie]
Her name was [my friend] and wearing plain blue suit.
end
scene I_went_condominium
I went her condominium with her.
Her room was very timid and decorated with colorful furniture.
end
scene I_went_apartment
I went her apartment with her.
She prepared me a cup of tea.
end
scene I_went_back_my_apartment
I went back my apartment and have a tea.
end
Above source code
{<my frien==Reiko>I_went_condominium<my friend==Yosie>I_went_apartment;I_went_back_my_apartment}
is a source code using condition formula.
Condision fomula of this source code is
<my friend==Reiko>
<my friend==Yosie>
In this condisioned scene calling statement, only on scene is called.
7threader searches conditions from top to bottom of text line.
When it found condition of True value it calls scene next to condition.
Then process of this line is over, and another conditions following first true condition are not evaluated or executed.
Expression of condition is allowing following expression at the moment.
Case of character variable
<my friend==Reiko>
True if value of "my friend" is Reiko
<my friend!=Reiko>
True if value of "my friend" is not Reiko
<my friend==>
True if value of "my friend" is null or not defined.
<my friend!=>
True if value of "my friend" is not null of defined.
Case of Counter of character variable
<$my friend==5>
<$my friend!=5>
<$my friend<=5>
<$my friend>=5>
Case of numeric variable
<%age of my friend==22>
<%age of my friend!=22>
<%age of my friend<=22>
<%age of my friend>=22>
Select with condition
Select statement can be used with condition formula
sample39.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl who was next at entrance examination.
{meet_with_friend}
{after_ceremony}
end
select after_ceremony
<my friend==Reiko>I_went_condominium
<my friend==Yosie>I_went_apartment
I_went_back_my_apartment
end
select meet_with_friend
meet_with_Reiko
meet_with_Yosie
end
scene meet_with_Reiko
[my friend=Reiko]
Her name was [my friend] and dressed in colorful one piece.
end
scene meet_with_Yosie
[my friend=Yosie]
Her name was [my friend] and wearing plain blue suit.
end
scene I_went_condominium
I went her condominium with her.
Her room was very timid and decorated withe colorful furniture.
end
scene I_went_apartment
I went her apartmen with her.
She prepared me a cup of tea.
end
scene I_went_back_my_apartment
I went back my apartment and have a tea.
end
above example
<my friend==Reiko>
<my friend==Yosie>
are condition formula in case of select statement.
If condition is false then this scene will not selected and if condition is true t
hen this scene will be candidate of selection.
Complex case is possible using select statement with condition formula as follows
sample40.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl who was next at entrance examination.
{meet_with_friend}
{after_ceremony}
end
select after_ceremony
<my friend==Reiko>I_went_condominium
<my friend==Reiko>I_went_to_tea_room
<my friend==Yosie>I_went_apartment
<my friend==Yosie>I_went_shopping
I_went_back_my_apartment
end
select meet_with_friend
meet_with_Reiko
meet_with_Yosie
end
scene meet_with_Reiko
[my friend=Reiko]
Her name was [my friend] and dressed in colorful one piece.
end
scene meet_with_Yosie
[my friend=Yosie]
Her name was [my friend] and wearing plain blue suit.
end
scene I_went_condominium
I went her condominium with her.
Her room was very timid and decorated with colorful furniture.
end
scene I_went_apartment
I went her apartmen with her.
She prepared me a cup of tea.
end
scene I_went_back_my_apartment
I went back my apartment and have a tea.
end
scene I_went_to_tea_room
We went tea room near the University.
end
scene I_went_shopping
We went shopping near her apartment.
end
If condition
<my friend==Reiko>
is true then select statement is same as following.
select after_ceremony
I_went_condominium
I_went_to_tea_room
I_went_back_my_apartment
end
If condition
<my friend==Yosie>
is true the select statement is same as following
select after_ceremony
I_went_apartment
I_went_shopping
I_went_back_my_apartment
end
Scene can be inhibited its excution using ! as follows.
sample41.7th
title meet_friend_at_ceremony
{!meet_with_Reiko}
When entrance ceremony was finished I was called by a girl who was next at entrance examination.
{meet_with_Reiko}
{meet_with_Yosie}
end
scene meet_with_Reiko
[my friend=Reiko]
Her name was [my friend] and dressed in colorful one piece.
end
scene meet_with_Yosie
[my friend=Yosie]
Her name was [my friend] and wearing plain blue suit.
end
---------------------- 7threader English Version -----------------------
When entrance ceremony was finished I was called by a girl who was next at entrance examination.
Her name was Yosie and wearing plain blue suit.
-------- 7threader English Version Copy Right Yuki Nanotabi 2004/2/28 Ver 1.00 ---------
In this case
{!meet_with_Reiko}
Does not call scene "meet_with_Reiko" but inhibit its excution.
using # like this
{#meet_with_Reiko}
inhibition is canceled.
If you want to level up priority of certain scene in select statement use &+ command like following
sample42.7th
title meet_friend_at_ceremony
When entrance ceremony was finished I was called by a girl who was next at entrance examination.
{meet_with_Reiko}
{&+I_went_back_my_apartment}
{after_ceremony}
end
select after_ceremony
I_went_condominium
I_went_apartment
I_went_back_my_apartment
end
scene meet_with_Reiko
[my friend=Reiko]
Her name was [my friend] and dressed in colorful one piece.
end
scene I_went_condominium
I went her condominium with her.
Her room was very timid and decorated with colorful furniture .
end
scene I_went_apartment
I went her apartment with her.
She prepared me a cup of tea.
end
scene I_went_back_my_apartment
I went back my apartment and have a tea.
end
In this case
{&+I_went_back_my_apartment}
this statement increase priority of scene "I_went_back_my_apartment"
So in select statement this scene will be selected primarily.
When this statement is used many times, priority is increase one level each time.
To decrease priority use
{&-I_went_back_my_apartment}
Default value of priority is zero.
Also priority not be allowed to be under zero.
Short stories can be regenerated repeatedly using 7threader.
At each time of regeneration, variables and flags are all initialized.
Also inhibition flag and priority of scene are reset.
No date could be taken over from former short story to its descendant.
Each scene and select statement has its own counter.
These counters are counted up each time when scene and select statement are called.
Counters are saved for each scenario files.
When scenario name is "test.7th" then Counter data file is saved as "test.7da"
This counter has effect on select statement.
Select statement will select scene primarily that has minimum counter value.
So select statement is executed as following steps.
1. Discriminate scene that had inhibited by ! command.
2. Judge condition formula and discriminate if its value is false
3. Select scene that had maximum priority.
4. Select scene which have minimum counter value.
5. Select randomly from candidate selected above.