As there was a small typo in the CSS and I wanted to experiment with a
macro, please see below a macro-version.
CSS:
span.strex:before {
content:"\00a0[...]\00a0";
background-color: lightgray;
}
span.strex > span {
display: none;
}
span.strex:hover:before {
content:"";
margin-right: 0em;
}
span.strex:hover span {
display:inline;
}
Macro + usage
\define strex(text) <span class="strex"><span>$text$</span></span>
The ''TextStretch'' macro is a great tool <<strex "for you as an author of
hypertext">> to keep the message short. Your readers can discover more
details easily.
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