efilter(1) on Linux
The text 39864e59f372, as Debian 10 (Buster) shipped it.
filter and/or sort NCBI Entrez search results
Flags it lists
-
-class -
-country -
-datetype -
-days -
-feature -
-field -
-help -
-journal -
-label -
-location -
-maxdate -
-mindate -
-molecule -
-organism -
-pairs -
-pub -
-released -
-sort -
-source -
-spell -
-status -
-type