getid() requires identifiers to start with a letter. Fix the
documentation to match the code.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
table = header { record } footer ;
header = "XDUMP" space [ "meta" space ]
identifier space timestamp newline ;
- identifier = id-chr { id-chr } ;
+ identifier = id-char1 { id-char } ;
+ id-char1 = ? ASCII letter ? ;
id-char = ? ASCII characters 33..126 except '"#()<>=' ? ;
timestamp = intnum ;
footer = "/" number newline ;