constraint class Identifies the class of constant Enumerated values: "limit" The value is a limit of some kind. command , computeroutput , literal , markup , option , optional , parameter , prompt , replace able , tag , userinput , varname See Also Examples <article xmlns='http://docbook.org/ns/docbook'> <title>Example constant</title> <para>In ACL, <constant>main::PCS</constant> contains the path component separator character. </para> </article> In ACL, main::PCS contains the path component separator character. <article xmlns='http://docbook.org/ns/docbook'> <title>Example constant</title>