e circumstances. An arbitrary
amount of white space (space and tabs) can separate each field (as long
as the maximum line length of 255 characters is not exceeded). Each of
the fields are described in the following sections.
<H2>
Label Field.</H2>
If the first character of the line is alphabetic, it is assumed to be the
start of a label. Subsequent characters are accepted as part of that label
until a space, tab, or ':' is encountered. The assembler assigns a value
to the label corresponding to the current 