On startup, LispWorks normally maps its heap at the address where it was mapped when the image was saved. It maps more memory close to this when needed. This may cause memory clashes with other software, but such clashes may be avoided by relocating LispWorks.
32-bit LispWorks is relocatable on Microsoft Windows, Intel Macintosh, Linux and FreeBSD. The 32-bit LispWorks implementations on non-x86 platforms are not relocatable. 64-bit LispWorks is relocatable on all supported platforms. The discussion in this section is applicable to all relocatable implementations.
On Microsoft Windows and Macintosh, LispWorks detects memory clashes and avoids them automatically. On these platforms there is no need to explicitly relocate LispWorks. The other relocatable implementations - LispWorks (32-bit) for Linux, LispWorks (64-bit) for Linux, LispWorks (32-bit) for FreeBSD, and LispWorks (64-bit) for Solaris - cannot safely detect memory clashes. Relocation may therefore be useful in these implementations.