Default config file.
.SH ENVIRONMENT
-.IP "HTTP_PROXY [protocol://]<host>[:port]"
+.IP "http_proxy [protocol://]<host>[:port]"
Sets proxy server to use for HTTP.
.IP "HTTPS_PROXY [protocol://]<host>[:port]"
Sets proxy server to use for HTTPS.
.IP "ALL_PROXY [protocol://]<host>[:port]"
Sets proxy server to use if no protocol-specific proxy is set.
.IP "NO_PROXY <comma-separated list of hosts>"
-list of host names that shouldn't go through any proxy. If set to a
-asterisk '*' only, it matches all hosts.
-.IP "COLUMNS <integer>"
-The width of the terminal. This variable only affects curl when the
---progress-bar option is used.
+list of host names that shouldn't go through any proxy. If set to a asterisk
+'*' only, it matches all hosts.
.SH EXIT CODES
There exists a bunch of different error codes and their corresponding error
messages that may appear during bad conditions. At the time of this writing,