CGIplus Variables (usage count 1)
-----------------
AUTH_TYPE=""
CONTENT_LENGTH="0"
CONTENT_TYPE=""
CSP_NONCE="3e83b60e3648587a63f10e1e11144d5"
DOCUMENT_ROOT=""
GATEWAY_EOF="$Z-B3F444CBC6E46590439DA451-"
GATEWAY_EOT="$D-CAE5B1DED5D5B4C7CB16DE5C-"
GATEWAY_ESC="$E-A8F6BBAD90C9128A397EDA83-"
GATEWAY_INTERFACE="CGI-PerlEx"
GATEWAY_MRS="16492"
GATEWAY_QIO="30408"
HTTP_ACCEPT="*/*"
HTTP_ACCEPT_ENCODING="gzip, br, zstd, deflate"
HTTP_CACHE_CONTROL="max-age=259200"
HTTP_CONNECTION="keep-alive"
HTTP_HOST="wasd.vsm.com.au"
HTTP_USER_AGENT="Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_VIA="1.1 squid-proxy-5b5d847c96-fwcxb (squid/6.10)"
HTTP_X_FORWARDED_FOR="10.2.1.48"
KEY_COUNT="0"
PATH_INFO="/wasd_root/src/perl"
PATH_ODS="5"
PATH_TRANSLATED="WASD_ROOT:[src]perl"
QUERY_STRING=""
REMOTE_ADDR="216.73.216.231"
REMOTE_HOST="216.73.216.231"
REMOTE_PORT="62856"
REMOTE_USER=""
REQUEST_METHOD="GET"
REQUEST_PROTOCOL="HTTP/1.1"
REQUEST_SCHEME="http:"
REQUEST_TIME_GMT="Tue, 03 Jun 2025 22:57:00 GMT"
REQUEST_TIME_LOCAL="Wed, 04 Jun 2025 08:27:00"
REQUEST_URI="/cgiplus-bin/CGIplusPM_example1.pl/wasd_root/src/perl"
SCRIPT_FILENAME="CGI-BIN:[000000]CGIPLUSPM_EXAMPLE1.PL"
SCRIPT_NAME="/cgiplus-bin/CGIplusPM_example1.pl"
SERVER_ADDR="119.252.17.13"
SERVER_CHARSET="ISO-8859-1"
SERVER_GMT="+09:30"
SERVER_NAME="wasd.vsm.com.au"
SERVER_PORT="80"
SERVER_PROTOCOL="HTTP/1.1"
SERVER_SIGNATURE="<address>WASD/12.3.1 Server at wasd.vsm.com.au Port 80</address>"
SERVER_SOFTWARE="HTTPd-WASD/12.3.1 OpenVMS/IA64 SSL"
UNIQUE_ID="67e0dd914d9ac8cb920"
-----------------

Demonstrate that the CGIplus::var() function and $ENV associative array contents are identical ...

$ENV{'SCRIPT_NAME'}  |/cgiplus-bin/CGIplusPM_example1.pl|
CGIplus::var('SCRIPT_NAME')  |/cgiplus-bin/CGIplusPM_example1.pl|

$ENV{'PATH_INFO'}    |/wasd_root/src/perl|
CGIplus::var('PATH_INFO'}    |/wasd_root/src/perl|

$ENV{'QUERY_STRING'} ||
CGIplus::var('QUERY_STRING') ||

SERVER_SOFT does not exist and looks like an empty string ...
SERVER_SOFT ||

SERVER_SOFTWARE should exist ...
SERVER_SOFTWARE |HTTPd-WASD/12.3.1 OpenVMS/IA64 SSL|