Thank You for Your great job on Scheme 48

Thanx. This system is really "right thing". I use Scheme 48 for solving exercises and executing examples from SICP.  I use Scheme 48 for learning some aspects of computer programming with CTM. There are some projects i use or want to use Scheme in which but it is not so interesting {simple ucpop clone in scheme, some experiments in not so famous top down operator precedence parsing, etc} . It is need to note that Scheme 48 threads functionality are excellent.