Is it possible to reduce the space between the plot title and the 3dplot in the attached file?

Plot_title_too_high.mw

I found system remember tables mentioned under Details in ?CacheOption.

What exactly are they? Anything special about them?

The ProgrammingGuide does not given more details. It only mentions that there are "procedures that cannot use option system remember tables". For what reason a procedure cannot use them?

I am looking for a command that generates a rotation matrix with Euler angles.

Ideally a command that allows to specify the sequence of rotations about x,y,z axes and the corresponding angles.

The only command I found is ?Student,LinearAlgebra,RotationMatrix which only rotates about one axis.

Anything else that Maple offers in this context? (searching with the search term "Euler" is hopeless -> too many hits.)

I tried to contact an author using the menu item more->contact autor.

I got the following back from postmaster@maplesoft.com

The IP-adress 199.71.183.16 (domain maplesoft.com) does not match the IP-adress of my mailprovider.

The authentification of the mailprovider works when I send directly from this mailprovider to gmail accounts.

Is this a known issue when sending via maplesoft.com or only temporary?

Is gmail too restrictive?

Does Maple provide any command/examples that can help verfying whether an analytic function or a time series (a sequence of numbers) is periodic?

I had a look at signal processing. In principle auto-correlation could be used for that purpose but I am interested in a command that outputs a period for a given allowable error or a graphical display that can help in an assessment.

Analytic convolution and analysis of the convolution terms for periodic conditions would be great for analytic functions.

I have no time (and limited skills) to program such things myself.