how can i understand this description in the l4re-source document?

[cheng guanghui]

Hello:

         In the page 19 of the l4re-source document there is a
description about caps as following:

         Caps      The table with application-specific named
capabilities (default is an empty table). If the table does not
contain a capability with the name ’rom’, the ’rom’ capability from
Ned’s initial caps is inserted into the table.

        How can i understand "If the table does not contain a
capability with the name ’rom’, the ’rom’ capability from Ned’s
initial caps is inserted into the table."

        Thanks.
        Warm regards.

                                   Cheng Guanghui