A command table consists of command lists. Each command list in the table defines the parsing of a particular command. For example, the following example shows the command lists for MCI_OPEN and MCI_INFO, which are part of the system default table contained in the MDMCMD.RC file.

"open",                     MCI_OPEN, 0,                 MCI_COMMAND_HEAD,
   "",                      MCI_INTEGER,                 MCI_RETURN,
   "notify",                MCI_NOTIFY,                  MCI_FLAG,
   "wait",                  MCI_WAIT,                    MCI_FLAG,
   "readonly",              MCI_READONLY,                MCI_FLAG,
   "shareable",             MCI_OPEN_SHAREABLE,          MCI_FLAG,
   "type",                  0L,                          MCI_STRING,
   "",                      MCI_OPEN_ELEMENT,            MCI_STRING,
   "alias",                 MCI_OPEN_ALIAS,              MCI_STRING,
"",                         0L,                          MCI_END_COMMAND,

"info",                     MCI_INFO, 0,                 MCI_COMMAND_HEAD,
   "",                      MCI_STRING,                  MCI_RETURN,
   "notify",                MCI_NOTIFY,                  MCI_FLAG,
   "wait",                  MCI_WAIT,                    MCI_FLAG,
   "product",               MCI_INFO_PRODUCT,            MCI_FLAG,
   "file",                  MCI_INFO_FILE,               MCI_FLAG,
"",                         0L,                          MCI_END_COMMAND,

Command lists have a sequence of lines that are organized into three columns:

• Column 1 contains the command and its flags in command string format.
  
• Column 2 contains the command and its flags in command message format.
  
• Column 3 contains the Line_types for each line in the command list.