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I got an advice by the author of tabu package to wait for the next version and use a special spacing variable set to negative lenght... But the 2.9 tabu is still in development!

Here I'd like to share another example where I solved the original problem with excessive spacing. It looks like this:
MultiframesWithTikZandTabu.jpeg

And the code is as follows:
\documentclass{article}

\usepackage{calc}
\usepackage[papersize={7cm, 7cm}]{geometry}
\usepackage{fontspec ...

Got help in comp.text.tex; here I post a partial solution:

\documentclass{article}

\usepackage[papersize={2.5cm, 2.5cm}]{geometry}
\usepackage{fontspec}
\usepackage{xcolor}
\usepackage{tabu}
\usepackage{tikz}

\geometry{
showframe,
inner=4mm,
outer=4mm,
top=4mm,
bottom=4mm
}
\usetikzlibrary ...

The following example illustrates a couple of problems, the worst of which is the fact that TikZ is drawing the subsequent layer on the background layer with a space in between... Any idea how to control the distance between red and green lines?

TikZnonFit.jpeg

\documentclass{minimal ...

Hi there,
anyone know if it's possible to do so? I mean, of course, without defining a new command...

It was necessary to draw up a table (I used tabu) and divide some cells. I happened to end up making nested tables, which resulted in a problem like this: the vertical rules of "child tables" don't connect with horizontal rules of the encapsulating table... So the workaround was finding the max ...

Hmm, looks better now: with your idea I made another test, which can produce the following picture...
ok.jpeg Ā reg.jpeg
If italic is used, the situation gets worse however (!zoom problem in effect!):
Ā italic.jpeg
Also I didn't realize that my PDF viewer doesn't show correctly while not zoomed ...

I could? Well yes, take a look how mightily bad it all works:

\documentclass{article}

\usepackage{geometry} % just to set up the page margin distances
\usepackage{array} % already a reworked macros base for tabu
\usepackage{xcolor} % to have colors, also required by tabu
\usepackage{tabu} % the ...

All,
perhaps someone of you might suggest how to get a long line and a word on it so that chars like 'a' are above that line, but 'p' or 'ņ' are split? I got the following code to do almost what was intended, but it has a problem with incorrect spacing and if similar construct is used within a tabu ...

Even better:
\newcommand{\lsidequotesize}{40}
\newcommand{\lsidequotecoeff}{0.325}
\definecolor{quotemarkcolor}{rgb}{0.5,0.5,0.5}

\newenvironment{lsidequote}{%
\begin{quotation}%
\setbox0=\hbox{\fontsize{\lsidequotesize}{0}\selectfont{\color{quotemarkcolor}``}}%
\setlength{\dimen0}{\ht0 ...