EssayTools command SpellCorrectWord("trnu") will return "run" and not return "turn".

Is there a way for Maple to only find anagrams with the same length as the given string?

Can Maple do this referencing an external dictionary located on the internet e.g. a complete Websters?

The uploaded worksheet describes a chain driven at constant speed by gears.

What math will describe its shape?

GearDrivenChain.mw

This worksheet contains images scanned from a book of problems.

Problem56.mw

For example, can a worksheet display a radius vector rotating through equally spaced points on a circle at a constantly reducing angular velocity?

This website suggests that the viewer write equations containing differentials and use them to plot topographical lines.

https://mathcurve.com/courbes3d.gb/topographic/topographic.shtml

I am basically familiar with equations containing derivatives, but not with equations containing differentials.

How can one employ these to draw the lines shown in the website's various plots of surfaces?