These fields give us an option to select multiple values. 
we can specify ranges for our selection criteria. Also we 
can exclude some values and intervals... only those records 
which have been included in singlevalues and ranges are 
selected from the dbase table...

if no values are given to this... then all the records are 
selected...


Cheers..
MNK

Select-options can be used if you want to give Upper limit 
and Lower limit values for example Date range.
1.Also if u want to just use it like range u can use No-
Display
2.If To field is not required u can use option No-
Extension / No-intervals.
3. but u can't use radiobuttons / checkbox with this option.

Always SELECT-OPTIONS key word will creates an Internal 
table with specified field.

The fields of that internal table are

SIGN --> Including or Excluding
OPTION-> EQ, NQ, LT, GT
LOW----> Lower limit
HIGH---> Higher limit

select-options r used  to give the range of values at the 
selection screen

SIGN --> Including or Excluding
OPTION-> EQ, NQ, LT, GT
LOW----> Lower limit
HIGH---> Higher limit

There are four field in select-option
1.Sign---> Inclusive or Exclusive
2.Option--->EQ,NQ,LT,GT
3.Low---> Lower Limit
4.High--->Higher Limit
Basically this is used to  fetch range of value from table
alse if we want no high limit Then we can use 'NO-Interval'
or 'NO-Extension'.
If we dont specify any value in lower and higher limit then 
all the records are fetched