Syntax Available in All Databases Dot-Dot commands can be used in any database. There is a command-line syntax equivalent for each mapping, thesaurus, and search feature that appears in the Ovid Web Gateway interface. For help on entering limits on the command line, refer to the individual database documentation.
Limits vary from database to database.
Each database field is assigned a two-letter label. You may use the field label as a qualifier in search commands. Each database has a unique list of field labels. Refer to the following help for a list of all databases, then pick a database from the list to view the field labels and search examples.