+ - **bash**: needed to run `make check`.
+ - **man** (manual pager): needed to view LTTng-tools commands' man
+ pages with the `--help` option or with the `lttng help` command.
+ Note that without `man`, you cannot get offline help with
+ LTTng-tools commands, not even their usage.
+
+LTTng-tools supports both the [LTTng Linux Kernel tracer](https://lttng.org)
+and [LTTng user space tracer](https://lttng.org) released as part of the same
+**minor** release series. While some releases do not change the tracer ABIs and
+should work with, no testing is performed to ensure cross-version compatibility
+is maintained.
+
+Note that applications instrumented with older versions of the LTTng UST project
+do not have to be rebuilt or modified to work with the latest LTTng-tools.
+For more information on versioning, please refer to the
+[LTTng documentation](https://lttng.org/docs).