the data type for \fIoffset\fP is not the same as defined for curl_off_t on
many systems! (Option added in 7.18.0)
.IP CURLOPT_SEEKDATA
-Data pointer to pass to the file read function. If you use the
+Data pointer to pass to the file seek function. If you use the
\fICURLOPT_SEEKFUNCTION\fP option, this is the pointer you'll get as input. If
you don't specify a seek callback, NULL is passed. (Option added in 7.18.0)
.IP CURLOPT_SOCKOPTFUNCTION
1 if there was an error. (Option added in 7.21.7)
.IP CURLOPT_CLOSESOCKETDATA
Pass a pointer that will be untouched by libcurl and passed as the first
-argument in the opensocket callback set with
+argument in the closesocket callback set with
\fICURLOPT_CLOSESOCKETFUNCTION\fP. (Option added in 7.21.7)
.IP CURLOPT_PROGRESSFUNCTION
Function pointer that should match the \fIcurl_progress_callback\fP prototype