NAME $1 - SYNOPSIS DESCRIPTION IMPLEMENTATION SEE ALSO ARGUMENTS MODIFIED CALLS BUGS print command usage information on request subroutine query (usage) hollerith_string usage (ARB) Many Software Tools commands will supply usage information when invoked with a single argument consisting only of a question mark. 'Query' exists to simplify this convention for the programmer. The sole argument is a period-terminated hollerith literal, such as that passed to 'error'. When called, 'query' checks to see that the command calling it was invoked with exactly one argument, and that that argument is a question mark. If so, the usage message is passed along to 'error' and the command terminates. If not, 'query' returns quietly. Two calls to 'getarg', some tests, and a call to 'error'. error error (2)