add documentation

Signed-off-by: Christian Muenker <mail@chipmuenk.de>
chipmuenk · Sep 19, 2023 · 94b90fc · 94b90fc
1 parent 9886a97
commit 94b90fc
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/docs/source/manual/input_pz.rst b/docs/source/manual/input_pz.rst
@@ -62,6 +62,11 @@ table.
 When poles or zeros have been modified, the "upload values" icon becomes highlighted. Changes
 are only applied when stored in the internal dict.
 
+Poles and zeros can be saved in various formats, CSV option can be selected in the CSV 
+pop-up menu (the 'cog' icon). When cells have been selected before saving, only the selected
+cells are saved, *exactly as displayed*. This means, cells are saved with reduced number of
+digits and containing special characters like '<' etc. which cannot be read back.
+
 Development
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