COMMENT ⊗   VALID 00004 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	This is a test of the new XMARK feature that allows this command to be
C00004 00003	PAGE 3
C00005 00004	R command
C00008 ENDMK
C⊗;
This is a test of the new XMARK feature that allows this command to be
given when there is an attachment.
This is to be attached.
This follows.
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bottom 
PAGE 3
R command
This seems to work as advertized but it does raise some questions.
For example, the return location is taken to be the last location at which
any change is made to the attachment.  If you move the attachment to a
different page or a different file and release one or more of the attached
lines then this becomes the R location.  Should it?