Character position definition and scope:

This character position is undefined for Computer files.  It contains a blank or fill character.

Record requirements for National-level and Minimal-level records:  Optional.

Content designator history:

In 1989, the character position definition 008/27 Type of machine (CF) was made obsolete.  The defined codes were:  a (Computer readable) and z (Other).

See also:

006 and 008:  Computer Files

006 and 008:  Cross Reference Tables by Type of Material

006/01-17:  Character Positions by Type of Material

006  Fixed-Length Data Elements - Additional Material Characteristics

008/00-39:  Character Positions by Type of Material

008  Fixed-Length Data Elements