n32 bit hex data pattern
(pattern=value).
u13 internal data patterns cycled
through for each write/read pass.
nIOT test pattern
(pattern=iot).
nIncrementing data
pattern:
u0, 1, 2, … 255 (pattern=incr)
nPattern string
(pattern=“string”)
nPattern file
(pf=filename)
uwhole file read into memory