diff --git a/DESCRIPTION b/DESCRIPTION
index b1ad4b5..a3c18ec 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -55,7 +55,8 @@ Imports:
     cyphr,
     stringr,
     shiny,
-    shinythemes
+    shinythemes,
+    markdown
 Depends:
     R (>= 4.1.0),
     tidyverse
diff --git a/notebooks/D2.txt b/notebooks/D2.txt
new file mode 100644
index 0000000..5b4de96
--- /dev/null
+++ b/notebooks/D2.txt
@@ -0,0 +1,56 @@
+# Generated by roxygen2: do not edit by hand
+
+export(get_public_keys)
+export(gy_decrypt)
+export(gy_deserialise)
+export(gy_deserialize)
+export(gy_encrypt)
+export(gy_info)
+export(gy_join_group)
+export(gy_key_funs)
+export(gy_load)
+export(gy_profile)
+export(gy_public_file)
+export(gy_readRDS)
+export(gy_save)
+export(gy_saveRDS)
+export(gy_serialise)
+export(gy_serialize)
+export(gy_set_group)
+export(gy_setup)
+export(gy_unzip)
+export(gy_users)
+export(gy_zip)
+export(run_app)
+import(shiny)
+import(shinydashboard)
+importFrom(base64enc,base64decode)
+importFrom(base64enc,base64encode)
+importFrom(getPass,getPass)
+importFrom(keyring,key_delete)
+importFrom(keyring,key_get)
+importFrom(keyring,key_list)
+importFrom(keyring,key_set_with_value)
+importFrom(qs,qdeserialize)
+importFrom(qs,qserialize)
+importFrom(rstudioapi,isAvailable)
+importFrom(rstudioapi,selectDirectory)
+importFrom(sodium,auth_decrypt)
+importFrom(sodium,auth_encrypt)
+importFrom(sodium,data_decrypt)
+importFrom(sodium,data_encrypt)
+importFrom(sodium,hash)
+importFrom(sodium,keygen)
+importFrom(sodium,pubkey)
+importFrom(sodium,sig_keygen)
+importFrom(sodium,sig_pubkey)
+importFrom(sodium,sig_sign)
+importFrom(sodium,sig_verify)
+importFrom(sodium,simple_decrypt)
+importFrom(sodium,simple_encrypt)
+importFrom(stringr,str_c)
+importFrom(stringr,str_glue)
+importFrom(stringr,str_remove)
+importFrom(zip,unzip)
+importFrom(zip,zip)
+importFrom(zip,zip_list)
diff --git a/notebooks/NAMESPACE b/notebooks/NAMESPACE
new file mode 100644
index 0000000..5b4de96
--- /dev/null
+++ b/notebooks/NAMESPACE
@@ -0,0 +1,56 @@
+# Generated by roxygen2: do not edit by hand
+
+export(get_public_keys)
+export(gy_decrypt)
+export(gy_deserialise)
+export(gy_deserialize)
+export(gy_encrypt)
+export(gy_info)
+export(gy_join_group)
+export(gy_key_funs)
+export(gy_load)
+export(gy_profile)
+export(gy_public_file)
+export(gy_readRDS)
+export(gy_save)
+export(gy_saveRDS)
+export(gy_serialise)
+export(gy_serialize)
+export(gy_set_group)
+export(gy_setup)
+export(gy_unzip)
+export(gy_users)
+export(gy_zip)
+export(run_app)
+import(shiny)
+import(shinydashboard)
+importFrom(base64enc,base64decode)
+importFrom(base64enc,base64encode)
+importFrom(getPass,getPass)
+importFrom(keyring,key_delete)
+importFrom(keyring,key_get)
+importFrom(keyring,key_list)
+importFrom(keyring,key_set_with_value)
+importFrom(qs,qdeserialize)
+importFrom(qs,qserialize)
+importFrom(rstudioapi,isAvailable)
+importFrom(rstudioapi,selectDirectory)
+importFrom(sodium,auth_decrypt)
+importFrom(sodium,auth_encrypt)
+importFrom(sodium,data_decrypt)
+importFrom(sodium,data_encrypt)
+importFrom(sodium,hash)
+importFrom(sodium,keygen)
+importFrom(sodium,pubkey)
+importFrom(sodium,sig_keygen)
+importFrom(sodium,sig_pubkey)
+importFrom(sodium,sig_sign)
+importFrom(sodium,sig_verify)
+importFrom(sodium,simple_decrypt)
+importFrom(sodium,simple_encrypt)
+importFrom(stringr,str_c)
+importFrom(stringr,str_glue)
+importFrom(stringr,str_remove)
+importFrom(zip,unzip)
+importFrom(zip,zip)
+importFrom(zip,zip_list)
diff --git a/notebooks/archive.zip b/notebooks/archive.zip
new file mode 100644
index 0000000..e3b8704
Binary files /dev/null and b/notebooks/archive.zip differ
diff --git a/notebooks/binary_enc.R b/notebooks/binary_enc.R
new file mode 100644
index 0000000..9c0b688
--- /dev/null
+++ b/notebooks/binary_enc.R
@@ -0,0 +1,20 @@
+files <- c("DESCRIPTION", "NAMESPACE")
+
+files |>
+  set_names() |>
+  lapply(function(ff) readBin(ff, "raw", file.size(ff)*1.1)) ->
+  dd
+
+dd |> object.size()
+serialize(dd, NULL) |> object.size()
+qs::qserialize(dd) |> object.size()
+
+library("archive")
+writeBin(dd[[1]], archive_write("notebooks/archive.zip", files[1]))
+writeBin(dd[[2]], archive_write("notebooks/archive.zip", files[2]))
+## Note: this only does 1 file at a time; we need archive_write_files
+
+archive("notebooks/archive.zip")
+
+?archive::archive_write
+