I don't understand the page.
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This is roughly what you'd see when you open an old MS-DOS program (.exe) in a text editor. They scrolled the page until something recognizable showed up. Which are the runtime errors that the Microsoft C-runtime can show when it has to abort the program due to an unrecoverable error. Like a stack overflow.
The editor has a bit of trouble with some of the bytes in the file that are control codes in ASCII. Showing them with a ^ followed by a letter that's the code + 0x40, an old convention. So ^@ is 0x00, ^A is 0x01, ^C is 0x03, ^M is 0x0D (carriage return), etcetera. It displays 0x0A as-is, interpreted as a line-feed that terminates the line. Which gives clues to the editor's origin; it is a Unix editor. One way in which Unix and DOS/Windows are famously incompatible, a line-ending in Unix is "\n", but it is "\r\n" in Windows. Noted by @badp, the color scheme suggests gedit was used.
Some of the runtime errors are still defined in modern Windows C/C++ programs that were built with Microsoft's C compiler. Like R6018. But not a stack overflow any more; that's handled by the operating system today. Exception code 0xC00000FD, STATUS_STACK_OVERFLOW. Don't bother sending the error report to Microsoft; they already have a billion of them.
Ages ago, error codes were defined in file cmsgs.h for Microsoft's C compiler. I am talking DOS here...
I am not sure if this is the correct reference, but it is anyhow close.
/*** *cmsgs.h - runtime errors * * Copyright (c) 1990-1997, Microsoft Corporation. All rights reserved. * *Purpose: * The file defines, in one place, all error message strings used within * the C run-time library. * * [Internal] * ****/ #if _MSC_VER > 1000 #pragma once #endif /* _MSC_VER > 1000 */ #ifndef _INC_CMSGS #define _INC_CMSGS #ifndef _CRTBLD /* * This is an internal C runtime header file. It is used when building * the C runtimes only. It is not to be used as a public header file. */ #error ERROR: Use of C runtime library internal header file. #endif /* _CRTBLD */ /* * runtime error and termination messages */ #ifdef _MAC #define EOL "\n" #else /* _MAC */ #define EOL "\r\n" #endif /* _MAC */ #define _RT_STACK_TXT "R6000" EOL "- stack overflow" EOL #define _RT_FLOAT_TXT "R6002" EOL "- floating point not loaded" EOL #define _RT_INTDIV_TXT "R6003" EOL "- integer divide by 0" EOL #define _RT_SPACEARG_TXT "R6008" EOL "- not enough space for arguments" EOL #define _RT_SPACEENV_TXT "R6009" EOL "- not enough space for environment" EOL #define _RT_ABORT_TXT "" EOL "abnormal program termination" EOL #define _RT_THREAD_TXT "R6016" EOL "- not enough space for thread data" EOL #define _RT_LOCK_TXT "R6017" EOL "- unexpected multithread lock error" EOL #define _RT_HEAP_TXT "R6018" EOL "- unexpected heap error" EOL #define _RT_OPENCON_TXT "R6019" EOL "- unable to open console device" EOL #define _RT_NONCONT_TXT "R6022" EOL "- non-continuable exception" EOL #define _RT_INVALDISP_TXT "R6023" EOL "- invalid exception disposition" EOL /* * _RT_ONEXIT_TXT is specific to Win32 and Dosx32 platforms */ #define _RT_ONEXIT_TXT "R6024" EOL "- not enough space for _onexit/atexit table" EOL #define _RT_PUREVIRT_TXT "R6025" EOL "- pure virtual function call" EOL #define _RT_STDIOINIT_TXT "R6026" EOL "- not enough space for stdio initialization" EOL #define _RT_LOWIOINIT_TXT "R6027" EOL "- not enough space for lowio initialization" EOL #define _RT_HEAPINIT_TXT "R6028" EOL "- unable to initialize heap" EOL /* * _RT_DOMAIN_TXT, _RT_SING_TXT and _RT_TLOSS_TXT are used by the floating * point library. */ #define _RT_DOMAIN_TXT "DOMAIN error" EOL #define _RT_SING_TXT "SING error" EOL #define _RT_TLOSS_TXT "TLOSS error" EOL #define _RT_CRNL_TXT EOL #define _RT_BANNER_TXT "runtime error " #endif /* _INC_CMSGS */