diff --git a/.DS_Store b/.DS_Store
index e9ab4fc..51555b6 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/paper/AAAI21_HGSL PrePrint.pdf b/paper/AAAI21_HGSL PrePrint.pdf
new file mode 100644
index 0000000..be7bb0b
Binary files /dev/null and b/paper/AAAI21_HGSL PrePrint.pdf differ