OSColang interpreter!

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OSColang documentation

This esolang is one-indexed.
Programs must begin with "BFDI 1a: Take the Plunge", and end with "BFB 30: Chapter Complete".
The format for a line is "Acronym Number: Title".

Programs are usually made under the restrictions that:
1. All lines must be real object show episodes, and
2. Lines must be unique

When Number is:
1: Variable declaration
Declares a new variable, argument 1 (Acronym).

2: Append
Places argument 2 (Title*) at the end of a variable argument 1 (Acronym).

3: Attribute of line
Returns an attribute of the 2nd argument (Line), based on the 1st argument (Number). If the 1st argument is 1, it returns the Acronym. If the 1st argument is 2, it returns the Number. If the 1st argument is 3, it returns the Title.

4: Return word at index
Returns the word of argument 2 (Title*) at the index argument 1 (Number).

5: Return character at index
Returns the character of argument 2 (Title*) at the index argument 1 (Number).

6: Print
Prints the contents of the variable argument 1 (Acronym).

7: Jump if not 0
Jumps the program pointer to line argument 2 (Number) if a variable argument 1 (Acronym) is not zero. Otherwise, do not jump.

8: Request input
Requests the input from the user, returning the input.

9: Increment by number
Increments a variable argument 1 (Acronym) by a number argument 2 (Number, * only for NaN).

10: Decrement by number
Decrements a variable argument 1 (Acronym) by a number argument 2 (Number, * only for NaN).

11: Clear variable
Clears a variable argument 1 (Acronym).

12: Return variable
Returns the value of a variable argument 1 (Acronym).

13: To ASCII
Returns the ASCII value of the first character in a variable argument 1 (Acronym).

14: From ASCII
Returns the ASCII character of the number in a variable argument 1 (Acronym).

15: Character of variable at index
Returns the character of the variable argument 1 (Acronym) at index variable argument 2 (Acronym).

Not a number, or not between 1 and 9 inclusive except type Number arguments: Previous
Takes the result of the previous operation. Used as an argument in Number (and inputs marked *) inputs.

Due to some JavaScript things, it is possible to get an error from JavaScript, and not the esolang itself.

Example programs

Hello, World!

BFDI 1a: Take the Plunge
II 1: The Crappy Cliff
BFDI:TPOT 1: You Know Those Buttons Don't Do Anything, Right?
BFB 3: Why Would You Do This on a Swingset
BFDIE 3: Everyone’s Enemies
BFAM 4: Hello Again...
BFDI 4: Sweet Tooth
BFB 1: Getting Teardrop to Talk
BFDI 1b: Take the Plunge
AIB 2: Smarter & Boulder
BFDI:TPOT 2: The Worst Day of Black Hole's Life
TAW 1a: Who, Me?
BFDIA 3: Insectophobe's Nightmare 3
BFDI 3: Are You Smarter Than a Snowball?
BFDIA 1: Yeah, Who? I Wanna Know
BFDI 5: Bridge Crossing
BFB 5: Fortunate Ben
BFDIA 5a: Get in the Van
BFDI 2: Barriers and Pitfalls
BFDI:TPOT 3: Getting Puffball To Think About Rollercoasters
BFDIA 5c: No More Snow!
II 3: The Arena of Death
II2 3: Tri Your Best
BFDI 12: A Leg Up in the Race
AIB 5: Sun Blocked
II 2: A Lemony Lesson
BFDIA 5d: It's a Monster
II2 2: Marsh on Mars
BFDI:TPOT 4: Gardening Zero
BFDIA 5e: The Long-lost Yoyle City
III 3: Snapshot Showdown
IIIV 3: Run the Risk!
TDOS:END 2: All the Time in the World
BFB 4: Today's Very Special Episode
BFDIA 6: Well Rested
TAW 1b: Yes, You!
III 2: The Shame of the Name
BFDI:TPOT 5: Fishes and Dishes
BFDI 19: Rescission
TDOS 3: Tower of Evil
AIB 3: Get A Grip
BFDI 10: Crybaby!
II 5: The Stacker
BFDIA 8: Meaty
BFDI 20: Gardening Hero
IIIV 2: Cob Mentality
BFDI:TPOT 6: The Great Goikian Bake-Off
BFDI 21: The Glistening
BFB 6: Four Goes Too Far
BFDI:TPOT 7: The Seven Wonders of Goiky
BFB 30: Chapter Complete

truth-machine

BFDI 1a: Take the Plunge
BFB 1: Getting Teardrop to Talk
BFDIA 1: Yeah, Who? I Wanna Know
BFB 8: Questions Answered
BFB 2: Lick Your Way to Freedom
BFDIA 2: Get Digging
BFDIA 5a: Get in the Van
BFB 6: Four Goes Too Far
BFDIA 3: Insectophobe's Nightmare 3
BFB 7: The Liar Ball You Don't Want
BFDIA 4: Zeeky Boogy Doog
BFDIA 8: Meaty
BFB 30: Chapter Complete

99 bottles of beer (impure)

BFDI 1a: Take the Plunge
? 1: ?
WALL, ?: ?
? 2: ?
WALL, ?: ?
? 1:  bottles of beer on the wall,
? 1: ?
BEER. ?: ?
? 2: ?
BEER. ?: ?
? 1:  bottles of beer.
? 1: ?
AROUND ?: ?
? 2: ?
AROUND ?: ?
? 1:  Take one down, pass it around,
? 1: ?
WALL. ?: ?
? 2: ?
WALL. ?: ?
? 1:  bottles of beer on the wall.
? 1: ?
NEW ?: ?
? 2: ?
NEW ?: ?
? 1:
? 1: ?
BEERS ?: ?
? 9: ?
BEERS ?: ?
? 99: ?
? 1: ?
TEMP ?: ?
? 11: #
TEMP ?: ?
? 12: ?
BEERS ?: ?
? 2: ?
TEMP ?: ?
? p: ?
? 12: ?
WALL, ?: !
? 2: ?
TEMP ?: ?
? p: ?
? 6: ?
TEMP ?: ?
? 11: #
TEMP ?: ?
? 12: ?
BEERS ?: ?
? 2: ?
TEMP ?: ?
? p: ?
? 12: ?
BEER. ?: !
? 2: ?
TEMP ?: ?
? p: ?
? 6: ?
TEMP ?: ?
? 6: ?
AROUND ?: ?
? 10: ?
BEERS ?: ?
? 1: ?
? 11: #
TEMP ?: ?
? 12: ?
BEERS ?: ?
? 2: ?
TEMP ?: ?
? p: ?
? 12: ?
WALL. ?: !
? 2: ?
TEMP ?: ?
? p: ?
? 6: ?
TEMP ?: ?
? 6: ?
NEW ?: ?
? 7: ?
BEERS ?: ?
? 34: ?
BFB 30: Chapter Complete

Cat program

BFDI 1a: Take the Plunge
BFDIA 1: Yeah, Who? I Wanna Know
BFB 1: Getting Teardrop to Talk
BFDIA 8: Meaty
BFDIA 2: Get Digging
BFB 2: Lick Your Way to Freedom
BFDIA 5a: Get in the Van
BFDIA 6: Well Rested
BFB 3: Why Would You Do This on a Swingset
BFB 30: Chapter Complete

XKCD Random Number

BFDI 1a: Take the Plunge
BFDI:TPOT 1: You Know Those Buttons Don't Do Anything, Right?
ONE 1: Freefall
BFDI:TPOT 9: Outbreak At Stake
ONE 2: Just Tripped
BFDI:TPOT 4: Gardening Zero
BFDI:TPOT 6: The Great Goikian Bake-Off
ONE 3: Screwball
BFB 30: Chapter Complete

FizzBuzz (fake, impure)

BFDI 1a: Take the Plunge
? 1: ?
F ?: ?
? 2: ?
F ?: ?
? 1: Fizz
? 1: ?
B ?: ?
? 2: ?
B ?: ?
? 1: Buzz
? 1: ?
FB ?: ?
? 2: ?
FB ?: ?
? 1: FizzBuzz
? 1: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
F ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
B ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
F ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
F ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
B ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
F ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
NUM ?: ?
? 9: #
NUM ?: ?
? 1: ?
? 6: ?
FB ?: ?
? 7: ?
NUM ?: ?
? 19: ?
BFB 30: Chapter Complete

Terminate program after instructions.

Fun facts

Things printed will print here.