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diff --git a/docs/libcurl/opts/CURLOPT_PROXY_TRANSFER_MODE.md b/docs/libcurl/opts/CURLOPT_PROXY_TRANSFER_MODE.md
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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_PROXY_TRANSFER_MODE
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_CRLF (3)
+  - CURLOPT_HTTPPROXYTUNNEL (3)
+  - CURLOPT_PROXY (3)
+  - CURLOPT_TRANSFERTEXT (3)
+---
+
+# NAME
+
+CURLOPT_PROXY_TRANSFER_MODE - append FTP transfer mode to URL for proxy
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_TRANSFER_MODE,
+                          long enabled);
+~~~
+
+# DESCRIPTION
+
+Pass a long. If the value is set to 1 (one), it tells libcurl to set the
+transfer mode (binary or ASCII) for FTP transfers done via an HTTP proxy, by
+appending ;type=a or ;type=i to the URL. Without this setting, or it being set
+to 0 (zero, the default), CURLOPT_TRANSFERTEXT(3) has no effect when
+doing FTP via a proxy. Beware that not all proxies support this feature.
+
+# DEFAULT
+
+0, disabled
+
+# PROTOCOLS
+
+FTP over proxy
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    curl_easy_setopt(curl, CURLOPT_URL,
+                     "ftp://example.com/old-server/file.txt");
+    curl_easy_setopt(curl, CURLOPT_PROXY, "http://localhost:80");
+    curl_easy_setopt(curl, CURLOPT_PROXY_TRANSFER_MODE, 1L);
+    curl_easy_setopt(curl, CURLOPT_TRANSFERTEXT, 1L);
+    res = curl_easy_perform(curl);
+    curl_easy_cleanup(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Added in 7.18.0
+
+# RETURN VALUE
+
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if the
+enabled value is not supported.