The idea and original essence of TenTags

The idea behind TenTags is to describe complex table structures (cell spans, text styles, alignment, and background colors) in a single, compact declarative string. This format serves as a universal source (AST), which the library compiles into an identical visual representation for HTML, Excel (.xlsx), and PDF, eliminating the need for the backend to maintain separate templates and write hundreds of lines of boilerplate code for each format.