NAME
StartsWith — Check whether the target string starts with the values.
SYNOPSIS
StartsWith TargetString SearchValue
DESCRIPTION
Return Value
1 String starts with the value.
0 String does not start with the value.
Arguments
TargetStringString to check.
SearchValueValue to check for in the string.

For information regarding exceptions / errors, see here.
EXAMPLES 
% StartsWith asdf as
1
% StartsWith asdf df
0
SEE ALSO
EndsWith, StringContains, string
KEYWORDS
check, string, validation, verification