167 .na
 168 \fB\fBTSYSERR\fR\fR
 169 .ad
 170 .RS 15n
 171 A system error has occurred during execution of this function.
 172 .RE
 173 
 174 .SH TLI COMPATIBILITY
 175 .sp
 176 .LP
 177 The \fBXTI\fR and \fBTLI\fR interface definitions have common names but use
 178 different header files. This, and other semantic differences between the two
 179 interfaces are described in the subsections below.
 180 .SS "Interface Header"
 181 .sp
 182 .LP
 183 The \fBXTI\fR interfaces use the header file, \fBxti.h\fR. \fBTLI\fR interfaces
 184 should \fInot\fR use this header.  They should use the header:
 185 .br
 186 .in +2
 187 #include<tiuser.h>
 188 .in -2
 189 .SS "Error Description Values"
 190 .sp
 191 .LP
 192 The \fBt_errno\fR values that can be set by the \fBXTI\fR interface and cannot
 193 be set by the \fBTLI\fR interface are:
 194 .br
 195 .in +2
 196 \fBTPROTO\fR
 197 .in -2
 198 .br
 199 .in +2
 200 \fBTOUTSTATE\fR
 201 .in -2
 202 .sp
 203 .LP
 204 A \fBt_errno\fR value that this routine can return under different
 205 circumstances than its \fBXTI\fR counterpart is \fBTBUFOVFLW.\fR It can be
 206 returned even when the \fBmaxlen\fR field of the corresponding buffer has been
 207 set to zero.

 167 .na
 168 \fB\fBTSYSERR\fR\fR
 169 .ad
 170 .RS 15n
 171 A system error has occurred during execution of this function.
 172 .RE
 173 
 174 .SH TLI COMPATIBILITY
 175 .sp
 176 .LP
 177 The \fBXTI\fR and \fBTLI\fR interface definitions have common names but use
 178 different header files. This, and other semantic differences between the two
 179 interfaces are described in the subsections below.
 180 .SS "Interface Header"
 181 .sp
 182 .LP
 183 The \fBXTI\fR interfaces use the header file, \fBxti.h\fR. \fBTLI\fR interfaces
 184 should \fInot\fR use this header.  They should use the header:
 185 .br
 186 .in +2
 187 #include <tiuser.h>
 188 .in -2
 189 .SS "Error Description Values"
 190 .sp
 191 .LP
 192 The \fBt_errno\fR values that can be set by the \fBXTI\fR interface and cannot
 193 be set by the \fBTLI\fR interface are:
 194 .br
 195 .in +2
 196 \fBTPROTO\fR
 197 .in -2
 198 .br
 199 .in +2
 200 \fBTOUTSTATE\fR
 201 .in -2
 202 .sp
 203 .LP
 204 A \fBt_errno\fR value that this routine can return under different
 205 circumstances than its \fBXTI\fR counterpart is \fBTBUFOVFLW.\fR It can be
 206 returned even when the \fBmaxlen\fR field of the corresponding buffer has been
 207 set to zero.