+static int cmd_help (char *line)
+{
+ int i;
+ char topic[21];
+
+ *topic = 0;
+ sscanf (line, "%20s", topic);
+
+ if (*topic == 0)
+ printf("Commands:\n");
+ for (i = 0; cmd[i].cmd; i++)
+ if (*topic == 0 || strcmp (topic, cmd[i].cmd) == 0)
+ printf(" %s %s\n", cmd[i].cmd, cmd[i].ad);
+ if (strcmp (topic, "find") == 0)
+ {
+ printf ("RPN:\n");
+ printf (" \"term\" Simple Term\n");
+ printf (" @attr [attset] type=value op Attribute\n");
+ printf (" @and opl opr And\n");
+ printf (" @or opl opr Or\n");
+ printf (" @not opl opr And-Not\n");
+ printf (" @set set Result set\n");
+ printf ("\n");
+ printf ("Bib-1 attribute types\n");
+ printf ("1=Use: ");
+ printf ("4=Title 7=ISBN 8=ISSN 30=Date 62=Abstract 1003=Author 1016=Any\n");
+ printf ("2=Relation: ");
+ printf ("1< 2<= 3= 4>= 5> 6!= 102=Relevance\n");
+ printf ("3=Position: ");
+ printf ("1=First in Field 2=First in subfield 3=Any position\n");
+ printf ("4=Structure: ");
+ printf ("1=Phrase 2=Word 3=Key 4=Year 5=Date 6=WordList\n");
+ printf ("5=Truncation: ");
+ printf ("1=Right 2=Left 3=L&R 100=No 101=# 102=Re-1 103=Re-2\n");
+ printf ("6=Completeness:");
+ printf ("1=Incomplete subfield 2=Complete subfield 3=Complete field\n");
+ }
+ return 1;
+}
+