Notepad+4 CPC edition v1 rev.6 (bzipped dsk, 11K). This is a
lightweight and simple text editor written in Basic for AMSDOS. It supports the work with
any text files. It may edit, in particular, a text with any line length. Just
32/64-bit Xlife ported to 8 bit world!
The number π calculator is here (the sources are included).