A short web article by Ralph Griswold in his L-Systems series that shows how L-System strings can be interpreted as t-sequence expressions. A small terminating L-System produces pal(rpt(U,I)), which evaluates to a palindromic repeat of a sequence. The article explains why separate rules make complex nested expressions easier to understand, and gives a table that maps abstract t-sequence operations (concatenation, repetition, extension, runs, reflection, palindrome, motif, modular reduction and expansion, collation) to concrete L-System function strings. A reference list points to the related t-sequence and L-System articles.