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diff --git a/v4.0/src/CMD/EDLIN/EDLEQU.ASM b/v4.0/src/CMD/EDLIN/EDLEQU.ASM
new file mode 100644
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+++ b/v4.0/src/CMD/EDLIN/EDLEQU.ASM
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+        page    60,132                  ;
+
+        .xlist
+        include DOSSYM.INC
+        include EDLSTDSW.INC
+        .list
+
+;======================= START OF SPECIFICATIONS =========================
+;
+; MODULE NAME: EDLEQU.SAL
+;
+; DESCRIPTIVE NAME: EQUATES FOR EDLIN
+;
+; FUNCTION: PROVIDES EQUATES FOR EDLIN.  IT ALSO PROVIDES THE MACRO
+;           VAL_YN.
+;
+; ENTRY POINT: NA
+;
+; INPUT: NA
+;
+; EXIT NORMAL: NA
+;
+; EXIT ERROR: NA
+;
+; INTERNAL REFERENCES:
+;
+;       ROUTINE: VAL_YN - VALIDATES Y/N RESPONSES FROM THE KEYBOARD
+;
+; EXTERNAL REFERENCES:
+;
+;       ROUTINE: NA
+;
+; NOTES: THIS MODULE IS TO BE PREPPED BY SALUT WITH THE "PR" OPTIONS.
+;        LINK EDLIN+EDLCMD1+EDLCMD2+EDLMES+EDLPARSE
+;
+; REVISION HISTORY:
+;
+;       AN000   VERSION 4.00 - REVISIONS MADE RELATE TO THE FOLLOWING:
+;
+;                               - IMPLEMENT SYSPARSE
+;                               - IMPLEMENT MESSAGE RETRIEVER
+;                               - IMPLEMENT DBCS ENABLING
+;                               - ENHANCED VIDEO SUPPORT
+;                               - EXTENDED OPENS
+;                               - SCROLLING ERROR
+;
+; COPYRIGHT: "MS DOS EDLIN UTILITY"
+;            "VERSION 4.00 (C) COPYRIGHT 1988 Microsoft"
+;
+;======================= END OF SPECIFICATIONS ===========================
+
+
+
+
+
+
+COMAND_LINE_LENGTH EQU 128
+QUOTE_CHAR EQU  16H                     ;Quote character = ^V
+CR      EQU     13
+STKSIZ  EQU     200h
+STACK   equ     stksiz
+
+asian_blk equ   40h                     ;an000;asian blank 2nd. byte
+dbcs_lead_byte equ 81h                  ;an000;asian blank lead byte
+nul     equ     00h                     ;an000;nul character
+Access_Denied equ 0005h                 ;an000;extended error code for access denied
+
+;======== Y/N validation equates =========================================
+
+yn_chk  equ     23h                     ;an000;check for Y/N response
+max_len equ     01h                     ;an000;max. len. for Y/N char.
+yes     equ     01h                     ;an000;boolean yes value
+no      equ     00h                     ;an000;boolean no value
+
+;======== text display values for initialization =========================
+
+video_get equ   0fh                     ;an000;int 10 get video attributes
+video_set equ   00h                     ;an000;int 10 set video attributes
+video_text equ  03h                     ;an000;80 X 25 color monitor
+
+;======== code page values for functions =================================
+
+get_set_cp equ  66h                     ;an000;get or set code page
+get_cp  equ     01h                     ;an000;get active code page
+set_cp  equ     02h                     ;an000;set active code page
+
+;======== screen length & width defaults =================================
+
+std_out equ     01h                     ;an000;console output
+display_attr equ 03h                    ;an000;display for IOCTL
+Get_Display equ 7fh                     ;an000;Get display for IOCTL
+Def_Disp_Len equ 25                     ;an000;default display length
+Def_Disp_Width equ 80                   ;an000;default display width
+
+;======== extended open equates ==========================================
+
+rw      equ     0082h                   ;an000;read/write
+                                        ;      compatibility
+                                        ;      noinherit
+                                        ;      int 24h handler
+                                        ;      no commit
+
+ext_read equ    0080h                   ;an000;read
+                                        ;      compatibility
+                                        ;      noinherit
+                                        ;      int 24h handler
+                                        ;      no commit
+
+rw_flag equ     0101h                   ;an000;fail if file not exist
+                                        ;      open if file exists
+                                        ;      don't validate code page
+
+creat_flag equ  0110h                   ;an000;create if file does not exist
+                                        ;      fail if file exists
+                                        ;      don't validate code page
+
+open_flag equ   0101h                   ;an000;fail if file not exist
+                                        ;      open if file exists
+                                        ;      don't validate code page
+
+creat_open_flag equ 0112h               ;an000;create if file does not exist
+                                        ;      open/replace if file exists
+                                        ;      don't validate code page
+
+attr    equ     00h                     ;an000;attributes set to 0
+
+;======== parse value equates ============================================
+
+nrm_parse_exit equ 0ffffh               ;an000;normal exit from sysparse
+too_many equ    01h                     ;an000;too many parms entered
+op_missing equ  02h                     ;an000;required operand missing
+sw_missing equ  03h                     ;an000;not a valid switch
+
+
+;======== Strucs =========================================================
+
+Display_Buffer_Struc Struc              ;an000;dms;
+
+        Display_Info_Level db      ?    ;an000;dms;
+        Display_Reserved db      ?      ;an000;dms;
+        Display_Buffer_Size dw      ?   ;an000;dms;
+        Display_Flags dw      ?         ;an000;dms;
+        Display_Mode db      ?          ;an000;dms;
+                                        ;  TEXT=01
+                                        ;  APA =02
+        Display_Mode_Reserved db      ? ;an000;dms;
+        Display_Colors dw      ?        ;an000;dms;# of colors
+        Display_Width_Pixels dw      ?  ;an000;dms;# of pixels in width
+        Display_Length_Pixels dw      ? ;an000;dms;# of pixels in len.
+        Display_Width_Char dw      ?    ;an000;dms;# of chars in width
+        Display_Length_Char dw      ?   ;an000;dms;# of chars in length
+
+Display_Buffer_Struc ends               ;an000;dms;
+
+
+
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