TRichView.com

Nothing too complicated, of course.
The only problem - the positioning relative to the line bottom/middle/top must be done after the calculation of the line vertical position, while baseline-related position does not require a post processing.

This is quite a complicated logic, there are no methods to make it simple. General direction - in OnChange, use SearchText (or other method) to find the character, then use SetSelectionBounds, ApplyStyleConversion, InsertText. Similar work is performed in the simple RichViewEdit-based syntax highlig...

Unfortunately, generally it's not possible, if you do not know text height. Image can be positioned relative to the text base line, not relative to the middle of line. More options will be implemented in future, but not now. Properties for vertical text positioning: 1) VAlign has 2 values: - image b...

Thank you, I fixed the code

Hmm, it should be safe to free the old control here.
Calling TRichView(Sender).RemoveControl(lOldCtrl) is not needed. What if you remove it?

There is no such method. Use AddNLATag for each text line

The seach selects the found string.
Call ApplyTextStyle or ApplyStyleConversion to change the selection font.
A simple example can be found in Demos\Delphi\MultiDemo\, the last subdemo.

Should it be an editing operation (that can be undone/redone by user)? If not, the code is below: procedure DeleteBlankLines(RVData: TCustomRVData); var i,r,c: Integer; table: TRVTableItemInfo; begin for i := RVData.ItemCount-1 downto 0 do if RVData.IsParaStart(i) and (RVData.GetItemStyle(i)>=0) and...

Well, really?

It's not so hard to make a "quick and dirty" solution for this problem.
So, if you are satisfied with other TRichView feature, consider this function done

Yes, this is a limitation of the current version of TRichView.
I plan to fix it in very near future

Unfortunately, it's not so trivial.

OnSaveRTFExtra can be used to save plain text headers, or headers with some simple formatting.

Saving arbitrary TRichView document as RTF header is not possible in the current version.

It's included in the main set of demos, for example in http://www.trichview.com/rvfiles/rvhelp.zip The directrory inside this zip is Demos\Addins\ChartItem\ It does not provide RTF saving of charts, but I can modify it to save them as pictures, it's very easy. But they will not be loaded as TCharts ...

HTML does not support complex numbering.

It's only possible to export it as a text (and MS Word does it).
TRichView can do it too: include rvsoMarkersAsText in Options of SaveHTML/SaveHTMLEx

RVPrint.TransparentBackground affects only the background color.
To remove the bitmap, call
RVPrint.rv.BackgroundBitmap := nil
after calling AssignSource.

If this problem can be reproduced, I think the simplest way to find the bug is logging a sequence of undo operations - when they were added, grouped, executed. I'll add this log feature in the next update (I'll try to upload it tomorrow)