Editing Dc (computer program) (section)

===Strings===
String values are enclosed in <code>[</code> and <code>]</code> characters and may be pushed onto the stack and stored in registers. The <code>a</code> command converts the low order byte of the numeric value into an [[ASCII#ASCII printable characters|ASCII]] character, or if the top of the stack is a string it replaces it with the first character of the string. There are no ways to build up strings or perform string manipulation other than executing it with the <code>x</code> command, or printing it with the <code>P</code> command.

The <code>#</code> character begins a comment to the end of the line.