a8287907aff5a8e7b783da53fc9e26a3d2a989a6
kent
  Sat Oct 3 09:58:11 2020 -0700
Improving usage statement.

diff --git src/tabFile/tabToTabDir/tabToTabDir.c src/tabFile/tabToTabDir/tabToTabDir.c
index 8b5be8b..8341634 100644
--- src/tabFile/tabToTabDir/tabToTabDir.c
+++ src/tabFile/tabToTabDir/tabToTabDir.c
@@ -20,31 +20,31 @@
 /* Explain usage and exit. */
 {
 errAbort(
 "tabToTabDir - Convert a large tab-separated table to a directory full of such tables according\n"
 "to a specification.\n"
 "command line:\n"
 "   tabToTabDir in.tsv spec.x outDir\n"
 "options:\n"
 "   -id=fieldName - Add a numeric id field of given name that starts at 1 and autoincrements \n"
 "                   for each table\n"
 "   -startId=fieldName - sets starting ID to be something other than 1\n"
 "usage:\n"
 "   in.tsv is a tab-separated input file.  The first line is the label names and may start with #\n"
 "   spec.txt is a file that says what columns to put into the output, described in more detail below\n"
 "   outDir is a directory that will be populated with tab-separated files with no duplicate records\n"
-"The spec.txt file contains one blank line separated stanza per output table.\n"
+"The spec.x file contains one blank line separated stanza per output table.\n"
 "Each stanza should look like:\n"
 "        table tableName    key-column\n"
 "        columnName1	sourceField1\n"
 "        columnName2	sourceField2\n"
 "              ...\n"
 "if the sourceField is missing it is assumed to be a column of the same name in in.tsv\n"
 "The sourceField can either be a column name in the in.tsv, or a string enclosed literal\n"
 "or an @ followed by a table name, in which case it refers to the key of that table.\n"
 "If the source column is in comma-separated-values format then the sourceField can include a\n"
 "constant array index to pick out an item from the csv list.\n"
 "\n"
 "If there is a '?' in front of the column name it is taken to mean an optional field.\n"
 "if the corresponding source field does not exist then there's no error (and no output)\n"
 "for that column\n"
 "\n"