diff --git a/app-guide.gmi b/app-guide.gmi
index 4f2497e..1bbc5ed 100644
--- a/app-guide.gmi
+++ b/app-guide.gmi
@@ -169,6 +169,7 @@ Gemtext UI considerations:
 * when to use preformatted content (avoid pointless graphics/clutter), include alt text
 * use of Emoji for actions (client support may vary, esp. with TUI clients and retro computers)
 * content lists vs. nav links; the "social sandwich"
+* client-side navigation: small pages can be fully cached, presented as-is from history; no cache control; user may see obsolete/old content; also benefits, like ability to see old versions of edited pages without the server having to save any history
 
 ## 4.2 Security considerations