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.\" ========================================================================
.\"
.IX Title "xpachanges 7"
.TH xpachanges 7 "July 23, 2013" "version 2.1.15" "SAORD Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
XPAChanges \- Changes For Users from XPA 1.0 and 2.0
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
This document describes changes that will affect users who migrate
from \s-1XPA\s0 1.0 to \s-1XPA\s0 2.0.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
There have been a few changes that affect users who upgrade \s-1XPA\s0
from version 1.0 to version 2.0.  These changes are detailed below.
.IP "\(bu" 4
\&\s-1XPA\s0 commands no longer have a resolver routine (this is open to
negotiations, but we decided the idea was dumb).  For the SAOtng
program, this means that you must explicitly specify the access
point, i.e.,:
.Sp
.Vb 1
\&  cat foo.fits | xpaset SAOtng fits
.Ve
.Sp
instead of:
.Sp
.Vb 1
\&  cat foo.fits | xpaset SAOtng
.Ve
.IP "\(bu" 4
By default, xpaset, xpaget, etc. now wait for the server callback to
complete; i.e., the old \-W is implied (and the switch is ignored).
This allows support for better error handling.  If you want xpaset, etc.
to return before the callback is complete, use \-n switch:
.Sp
.Vb 1
\&  echo "file foo.fits" | xpaset \-n SAOtng
.Ve
.IP "\(bu" 4
The old \-w switch in xpaset and xpaget is no longer necessary (and is
ignored), since you can have more than one process communicating with
an xpa access point at one time.
.IP "\(bu" 4
The new \-p switch on xpaset means you need not read from stdout:
.Sp
.Vb 1
\&  xpaset \-p SAOtng colormap I8
.Ve
.Sp
will send the paramlist to the SAOtng callback without reading from stdin.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
See xpa(n) for a list of \s-1XPA\s0 help pages