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Any [[ZZT-OOP]] line beginning with an apostrophe ('''<nowiki>'</nowiki>''') is treated as a '''comment''' and ignored by the interpreter. Comments provide a way for the programmer to document their code, or to quickly disable lines of code without deleting the text.
Any [[ZZT-OOP]] line beginning with an apostrophe ('''<nowiki>'</nowiki>''') is treated as a '''comment''' and ignored by the interpreter. Comments provide a way for the programmer to document their code, or to quickly disable lines of code without deleting the text.
A line beginning with an apostrophe ('''<nowiki>'</nowiki>''') is also acts as '''zapped label''', due to the implementation of [[zap|#zap and #restore]]. For some purposes, it maybe be useful to "pre-zap" a label in code.


The apostrophe must be the first character on the line. Any leading whitespace will cause the line to be treated as display text.
The apostrophe must be the first character on the line. Any leading whitespace will cause the line to be treated as display text.


Text placed after ZZT-OOP commands may be ignored in a manner similar to comments due to how the interpreter parses code lines.
Comments are also used to handle [[Label|zapped labels]]. As such, one can zap a label ahead of time by writing it as a comment.


{{ZZT-OOP navbox}}
{{ZZT-OOP navbox}}

Latest revision as of 08:49, 24 December 2025

Any ZZT-OOP line beginning with an apostrophe (') is treated as a comment and ignored by the interpreter. Comments provide a way for the programmer to document their code, or to quickly disable lines of code without deleting the text.

The apostrophe must be the first character on the line. Any leading whitespace will cause the line to be treated as display text.

Comments are also used to handle zapped labels. As such, one can zap a label ahead of time by writing it as a comment.