1. parameter-name 2. element-name->attribute-name 3. command-name->attribute-name 4. beam%sequence-name->attribute-name 5. table(table-name,..,..)The first format refers to the value of the global parameter "parameter-name", the second and third formats refer to the real attribute "attribute-name" of the element "element-name", or the command "command-name". NUmber four is specific to beams belonging to a particular sequence (for details see sequences and beams). Number five allows extraction of variables from existing tables, as specified in table access.
hansg, May 8, 2001