Theorem and proposition boxes with preview and recall functions
Description
This package provides a convenient way to create customizable theorem and
proposition boxes using tcolorbox. Its most distinctive feature is the
automatic Preview and Recall mechanism. By using a single command (\refcallsp),
you can display a statement box anywhere in your document. The package
automatically determines its position relative to the main definition: if
placed before, it generates a "Preview" box; if placed after, it generates a
"Recall" box. Both automatically include hyperlinks jumping directly to the
main definition.
