There are two ways of writing string constants in GASP: as
literal text, and by numeric byte value. Specify a string literal
between double quotes ("str"). Specify an individual
numeric byte value as an absolute expression between angle brackets
(<expr>. Directives that output strings allow you to
specify any number of either kind of value, in whatever order is
convenient, and concatenate the result. (Alternate syntax mode
introduces a number of alternative string notations; see section Alternate macro syntax.)
You can write numeric constants either in a specific base, or in
whatever base is currently selected (either 10, or selected by the most
recent .RADIX).
To write a number in a specific base, use the pattern
s'ddd: a base specifier character s, followed
by a single quote followed by digits ddd. The base specifier
character matches those you can specify with .RADIX: `B' for
base 2, `Q' for base 8, `D' for base 10, and `H' for base
16. (You can write this character in lower case if you prefer.)