escape sequences which begin with `%'. When specifying a format
string, the usual C backslash characters are honored: `\\b', `\\f',
`\\n', `\\r', and `\\t'. Continuation lines in format files end with
-`\\' followed by the newline character.
+`\\' followed by the newline character. A literal `%' can be inserted into
+a format file by using the sequence `%%'.
.\" TALK ABOUT SYNTAX FIRST, THEN SEMANTICS
.SS SYNTAX
Format strings are built around
unquote expr string remove RFC 2822 quotes from \fIstr\fR
trim expr trim trailing whitespace from \fIstr\fR
kilo expr string express in SI units: 15.9K, 2.3M, etc.
+ %(kilo) scales by factors of 1000,
+kibi expr string express in IEC units: 15.5Ki, 2.2Mi.
+ %(kibi) scales by factors of 1024.
putstr expr print \fIstr\fR
putstrf expr print \fIstr\fR in a fixed width
putnum expr print \fInum\fR