SAS System Options under Windows

OBS System Option: Windows

Specifies when to stop processing observations or records.

Default:	MAX
Valid in:	configuration file, SAS invocation, OPTIONS statement, SAS System Options window
Category:	Files: SAS Files
PROC OPTIONS GROUP=	SASFILES
Windows specifics:	Valid range
See:	OBS System Option in SAS Language Reference: Dictionary

-OBS n | nK | nM | nG | nT |hexX | MIN | MAX

OBS=n | nK | nM | nG | nT |hexX | MIN | MAX

n | nK | nM | nG | nT: specifies a number to indicate when to stop processing, with n being an integer. Using one of the letter notations results in multiplying the integer by a specific value. That is, specifying K (kilo) multiplies the integer by 1,024, M (mega) multiplies by 1,048,576, G (giga) multiplies by 1,073,741,824, T (tera) multiplies by 1,099,511,627,776. You can specify a decimal value for n when it is used to specify a K, M, G, or T value. For example, a value of 20 specifies 20 observations or records, a value of .782k specifies 801 observations or records, and a value of 3m specifies 3,145,728 observations or records.
hexX: specifies a number to indicate when to stop processing as a hexadecimal value. You must specify the value beginning with a number (0-9), followed by an X. For example, the hexadecimal value F8 must be specified as 0F8X in order to specify the decimal equivalent of 248. The value 2dx specifies the decimal equivalent of 45.
MIN: sets the number to indicate when to stop processing to 0.
MAX: sets the number to indicate when to stop processing to 2,147,483,647. On 64-bit systems, MAX is 9,223,372,036,854,775,807. MAX is the default.