[solved] findrx - from|rf flags

[gin]

The concept makes sense, but the syntax is puzzling.

Let's say I'm trying to search inside this text "ser Control Panel (0 new messages) • View your posts"

Does this mean I can use from with an index between 0 and 52 characters (the length of the string?)

How would I search the middle 48 characters using rf? - basically search from character 3 to character 50), or the string, "r Control Panel (0 new messages) • View your pos"

Thanks for your patience.