whew! docs finished. 3.00 beta is DONE!

docs/manual/dev/functions/PREP.adoc

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+=== `prep.py`
+This contains functions that download the base tarball releases, preps them for <<code_bchroot_py_code>>, builds necessary directory structures, and performs the overlay preparations.
+
+==== dirChk(_conf_)
+This function creates extra directories if needed.
+
+===== conf
+See <<conf>>.
+
+==== downloadTarball(_conf_)
+This function downloads the tarball (<<code_mirrorfile_code>>) from the <<code_mirror_code>>, and performs verifications (SHA1 and GPG signature <<code_mirrorgpgsig_code,if enabled>>). Returns the full/absolute path to the downloaded tarball.
+
+===== conf
+See <<conf>>.
+
+==== unpackTarball(_tarball_path_, _build_, _keep_ = False)
+This function extracts the tarball downloaded via <<downloadtarball_em_conf_em,downloadTarball()>>.
+
+===== tarball_path
+The full/absolute path to the downloaded tarball.
+
+===== build
+See <<build>>.
+
+===== keep
+`True` or `False`. Whether we should keep the downloaded tarball after unpacking/extracting. If your upstream tarball changes often enough, it's recommended to set this to `False`. However, setting it to `True` can speed up the build process if you're on a slower Internet connection.
+
+==== buildChroot(_conf_, _keep_ = False)
+This incorporates <<downloadtarball_em_conf_em,donwloading>> and <<unpacktarball_em_tarball_path_em_em_build_em_em_keep_em_false,extracting>> into one function, as well as applying the <<pre_build_d>> directory (and the <<pre_build_d_2,pre-build.d templates>>).
+
+===== conf
+See <<conf>>.
+
+===== keep
+See <<keep>>.
+
+==== prepChroot(_conf_)
+Returns a modified/updated <<build>>. This function:
+
+. Prepares some variables that <<changing_the_build_process,pre-build.sh>> needs inside the chroot(s)
+. Builds <<version_info_txt_j2,the VERSION_INFO.txt file>>
+. Updates the build number
+. Imports the <<code_mygpgkey_code,signing GPG key>>
+
+===== conf
+See <<conf>>.
+
+==== postChroot(_conf_)
+This function applies the <<overlay_2>> directory (and the <<overlay,overlay templates>>).
+
+===== conf
+See <<conf>>.