CAD tip # 8281:

String concatenation of the results of multiple fields can be done by simple insertion of multiple fields in a row.

E.g. create a new block in BEDIT and add (define) a new attribute to it (ATTDEF). In the Attribute definition dialog, check the Preset option. In the input box Default, use right click and "Insert field" to add the first part of the resulting dynamic text - e.g. the Y-coordinate of the block insertion point. Type another part of the string, e.g. " / ". Right-click again and insert another field - e.g. the X-coordinate of the newly defined block. Etc. Complete the block definition.