PropertyHandle :: IsBlob - - internal feature (not documented)
Return value:  Return value ( logical  )
The function returns YES when the question was answered positively. Otherwise it returns NO.
Implementation details
logical 
PropertyHandle  :: IsBlob ( char chkopt=AUTO )
- chkopt
 - Check option
The option forces the function to check the property handle before running executing the function. You can pass NO to avoid unnecessary checking. Default: AUTO
 

