.TH JOIN-INTO-GROUPS-OF 1 2021-03-07 NCBI "NCBI Entrez Direct User's Manual" .SH NAME join\-into\-groups\-of \- join input words into N\-word groups .SH SYNOPSIS .B join\-into\-groups\-of .I N .SH DESCRIPTION \fBjoin\-into\-groups\-of\fP is a Unix-style filter that splits its input into groups of \fIN\fP words (the last group possibly being partial) with each group appearing on its own line and delimited internally by commas.