Editing Integer BASIC (section)

===Variable names===
Where [[Dartmouth BASIC]] and HP-BASIC limited variable names to at most two characters (either a single letter or a letter followed by one digit), and where MS-BASIC allowed a letter followed by an optional letter or digit (ignoring subsequent characters), Integer BASIC was unusual in supporting any length variable name (e.g., SUM, GAMEPOINTS, PLAYER2). The only caveat was that variable names could not contain reserved words; for example, THISCOLOR and COLORFUL were invalid variable names because they contained the keyword {{code|COLOR}}, a system command.{{sfn|Raskin|1978|p=38}} Additionally, lines were limited to 128 characters, so variable names could not exceed that length.{{sfn|Raskin|1978|p=118}}