Commands
EAF_OpenPersist
EAF_OpenScratch
EAF_Write
EAF_AWrite
EAF_Read
EAF_ARead
EAF_Probe
EAF_Wait
EAF_Close
Permissions
CHEMIO_RW
CHEMIO_W
CHEMIO_R
Asynchronous Status
CHEMIO_DONE
CHEMIO_PENDING
Return Value
CHEMIO_OK
CHEMIO_FAIL