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

I'm trying to get familiar with the Physics package. It's huge.  Since I know vector projection, I can guess what a projected vector might be. But what would a non-projected vector be in a physical context? 

A web search for non-projected vectors was unsuccessful.

My best guess is that non-projected vectors in Maple are those where no coordinate system is specified for vectors in an expression for a physical law. Like here in Maxwell equations. Am I correct?

To distinguish between these vectors the Physics[Vector] package uses an underscore “_”.

If my understanding is correct so far, I have three questions:

• Can I replace the unit vectors of implemented projected vectors to something else (e.g. _i to e__x)
• Is it possible to define projected vectors beyond what is implemented in Maple?
• Can I use the packages VectorCalculus and Physics[Vector] at the same time?

For the simulation of a microcontroller I am looking for discrete components like AD and DA converters, filters, differentiators, integrators.

The plant to be controlled is built with components from the MapleSim 2022 component library.

If there are no libraries that are compatible with the current version of MapelSim, I wonder if there is something that could be customized.

Any insights on the subject are welcome.