FUSER SRCTX maximum length

Would someone have knowledge of the max length for SRCTX lenght on FUSER or Data Area objects as well as others. I currently use a max of 94 bytes in length. Is this still enough for V4 objects or should it be increased? There has been some discussion among the SAG community that it has increased due to the new functionality in Data Areas with V4 but nothing conclusive.
Thanks,
Mark