H5 --dotnames, .dotnames dotnames p Related command line option, pseudo instruction and predefined label p Allow label names to start with a dot. p First dots were not allowed in label names. Then some assemblers prepended a dot to the pseudo instructions to easily distinguish them from normal instructions and label names, so they could start at any column of a source line. Having seen that, some people immediately developed the need to start their label names with a dot as well… p Normally, without this option, only pseudo instructions like '.ds' or '.org' can start with a dot. Then they may be written in any column of a source line regardless of the '--reqcolon' setting. p With this setting the limitations described at '--reqcolons' also applies to pseudo instructions starting with a dot because the dot no longer makes them special and implicitely a non-label. p The following example is only valid source with --dotnames and --reqcolon: pre .org 0 ; starts in column 0 => requires --reqcolon .ds 0x66 ; one of the original dot named pseudo instructions jp .nmi_handler ; requires --dotname p Of course you could clean up your source as well… p Prior to version 4.3.4 a label _dotnames_ was also defined.