diff --git a/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf b/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf
index 1df9fef..f4dd9ee 100644
Binary files a/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf and b/pdf/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pdf differ
diff --git a/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx# b/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx#
deleted file mode 100644
index ddc06fc..0000000
--- a/presentation_powerpoint/meeting_2nd/.~lock.mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx#
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/presentation_powerpoint/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx b/presentation_powerpoint/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx
index d026237..5f66eb4 100644
Binary files a/presentation_powerpoint/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx and b/presentation_powerpoint/meeting_2nd/mobile_ar_vr_working_group_reading_group_2nd_meeting.pptx differ