<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=us-ascii" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 11.00.9600.16476"></HEAD> <BODY> <DIV dir=ltr align=left><FONT color=#0000ff size=2 face="Courier New"><SPAN class=995144822-27012014>It appears that my previous email was not sent completely. Sorry for that. Here is the complete question.</SPAN></FONT></DIV> <DIV dir=ltr align=left><FONT color=#0000ff size=2 face="Courier New"><SPAN class=995144822-27012014></SPAN></FONT> </DIV> <DIV dir=ltr align=left><SPAN class=995144822-27012014> <DIV><FONT color=#0000ff size=2 face="Courier New"><SPAN class=765280022-27012014>Hi to all,</SPAN></FONT></DIV> <DIV><FONT color=#0000ff size=2 face="Courier New"><SPAN class=765280022-27012014></SPAN></FONT> </DIV> <DIV><FONT color=#0000ff size=2 face="Courier New"><SPAN class=765280022-27012014>Section "3.6 symbols" of the Racket reference manual states:</SPAN></FONT></DIV> <DIV><FONT color=#0000ff size=2 face="Courier New"><SPAN class=765280022-27012014></SPAN></FONT> </DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2>Interned and unreadable symbols are only weakly held ... but a symbol maay disappear when ... used as the key in a weak hash table ..."<SPAN class=995144822-27012014>.</SPAN></FONT></FONT></FONT></SPAN></DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014></SPAN></FONT></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014>I would understand:</SPAN></FONT></FONT></FONT></SPAN></DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014></SPAN></FONT></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2>UNINTERNED and unreadable symbols are only weakly held ... but a symbol may disappear when ... used as the key in a weak hash table ..."<SPAN class=995144822-27012014>.</SPAN></FONT></FONT></FONT></SPAN></SPAN></FONT></FONT></FONT></SPAN></DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014></SPAN></FONT></FONT></FONT></SPAN></SPAN></FONT></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014>May be just a typo, but as I am not sure I understand the docs well, I post my question here instead of posting a bug report.</SPAN></FONT></FONT></FONT></SPAN></SPAN></FONT></FONT></FONT></SPAN></DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014></SPAN></FONT></FONT></FONT></SPAN></SPAN></FONT></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014><SPAN class=765280022-27012014><FONT face="Courier New"><FONT color=#0000ff><FONT size=2><SPAN class=995144822-27012014>Greetings, Jos</SPAN></FONT></FONT></FONT></SPAN></SPAN></FONT></FONT></FONT></SPAN></SPAN></DIV></DIV></BODY></HTML>