Improve make_ndx help text
authorTeemu Murtola <teemu.murtola@gmail.com>
Tue, 31 May 2016 19:24:38 +0000 (22:24 +0300)
committerTeemu Murtola <teemu.murtola@gmail.com>
Tue, 31 May 2016 19:27:48 +0000 (22:27 +0300)
commit13e0dc7121d4b16eac44e1029a5dc28ef577fcc1
tree2eb3e870cea34b363bd2ffc3e7907cccec1f464a
parent21421822dc6f6eb90fcdbb21179c9c005e5ee0d8
Improve make_ndx help text

Clarify the use of boolean operators.  The old help text could
incorrectly hint that AND, OR, and NOT would work as keywords.
Add a reference to gmx select that in most cases can serve as a
replacement.

Fixes #1976.

Change-Id: I0284c849c398e5b09569453d7d0f19b9639a6d0c
src/gromacs/gmxana/gmx_make_ndx.cpp