Diff of IT memo/GrADS memo/textout

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#author("2020-03-08T10:04:56+09:00","kei","kei")
** Description of textout [#i9d5d888]

Writes out the data into a specified file in multi-column text format. The syntax is
- textout '''colnumber filename expr'''~
where:
-- colnumber: number of columns. more than 1.
-- filename: name of text file
-- expr: any GrADS expression as like with "display (d)" command.
** Installation [#j5e819ef]
+ Download textout.gs and grd2txt.f. Save them into $GADDIR (e.g. /usr/local/grads/lib)
+ make grd2txt
** Source codes [#ze2a5718]
- &attachref(textout.gs);
- &attachref(grd2txt.f);
- &ref(textout.gs);
- &ref(grd2txt.f);