I cannot find documentation on Typesetting commands that can explain the following

Download help_page_apply.mw

I remember a section “Tell us what we can do better” at the bottom of online help pages. I used this whenever I came across a potential error worth investigating.

Has this section disappeared (I hope not) or do I have a browser issue?

Background:
I would like to achieve textbook style formatting of integrals in Maple output. I am aware that interpreting a dx in an integral as a "differential" is controversial. The way Maple displays the integration variable in italic and the d in roman makes sense and avoids confusion with interpretations that are no longer needed.
However, what I want to avoid is mixing dx and dx in the same document.

Can Maple be set by default that the d in the dx of an integral becomes italic?

If this is not possible and because this question comes from habits in physics: Would a display option in the physics package be possible?

Download Differential_format_in_integrals.mw

For the attached worksheet "insert contents" worked two month ago. My computer settings have not changed since.

The same happens with an empty worksheet (document mode) created with 2022.2

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/Unit_of_t.mw .

Download Unit_of_t.mw

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/empty.mw .

Download empty.mw

Example: After manipulating the following indefinite integral

Int(r^2, m)

I want to add ranges before evaluating the integral (for display purposes I keep the innert form). The op command or the IntegrationTools can be used for that (disassembling the expression and assembling it to new int expression) but require quite long code. Isn’t there a shorter  way to simply add ranges to the integration variable.

Update: Download Add_range.mw