AIPS HELP file for XPARM in 31DEC09

As of Sun Nov 22 16:58:57 2009

HELP SECTION

XPARM
Type: Adverb   (Real(10))
Use:  A general adverb which contains ten elements as
      parameters to some process.  When used with YPARM
      XPARM refers to the X-coordinate.
Null value:   Usually 0.
      Check each verb or task for the use of the null value.

EXPLAIN SECTION