Strings on j1b

[cicamargoba]

Hello, I'm working with J1b with my computer' architecture course, very useful and easy to understand, congratulations for your work. I've already worked with the first j1 version and I notice that there are new version, so I decide migrate to j1b version, right now I can run some examples on my ECP5-25 FPGA board (colorlight 5A) but I can't make work the string word s". I check my old version crossj1.fs and there is a definition for this word l, but in the new version I can't find this definition, Can you let me some advice forake work the s" word?
Thanks in advance