Tore,
>The cdx structure has an advanced form of compression built in.
>
>MyTable.dbf: 5,580,078 records
>Myfield: C(60)
>Index on myfield to temp && 465,009 bytes
>Index on Myfield tag temp of tempcdx && 176,362 bytes

Serves me right to have given that unexact specs<g>
More apples to apples:

Index on myfield to temp Compact && ?? bytes


tg