Comments: Difference between revisions

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→‎{{header|RPL}}: RPL 1993 features
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(Might as well put that number 4 on the screen.)</syntaxhighlight>
=={{header|RPL}}==
Although its code can sometimes be difficult to read due to stack operations, basic RPL does not provide any functionality to comment out. The only solution wouldis bethen to insert strings and delete them immediately, such as:
SWAP - <span style="color:grey">"swap the first 2 levels and subtract" DROP</span>
From 1993, comments can be added in a source code written with a text editor on a computer, starting with an @ and ending by either another @ or a newline character, before transfer to and compilation by the calculator. The compilation step removes all comments.
SWAP - <span style="color:grey">@ swap the first 2 levels and subtract </span>
 
=={{header|Ruby}}==
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