begin proc far means

BEGIN PROC FAR ;The directives PROC and ENDP are used to define a label for a 
			  ;sequence of machine instructions called a procedure. 
               
              ;FAR: Defines a far procedure.
              
              ;A Far call refers a procedure which is in different code segment 
              ;It is also called Intra-segment call. 
               
              ;A FAR replaces CS & IP with new CS & IP.
               
              ;The lcall instruction calls intersegment (far) procedures using a
              ;full pointer. lcall causes the procedure named in the operand to 
              ;be executed. When the called procedure completes, execution flow 
              ;resumes at the instruction following the lcall instruction (see 
              ;the return instruction). 
               
              ;PROC directive stores the contents of the register in the stack.
              ;The directive is used along with the name of the procedure to 
              ;indicate the end of a procedure to the assembler. The directive, 
              ;together with the procedure directive, PROC, is used to “bracket” 
              ;a procedure.