बौधायन श्रौतसूत्रम् (कृष्ण यजुर्वेद तैत्तिरीय शाखा - सम्पूर्ण प्रश्न एवं श्रौत-याग कल्प सटीक)

..." ? No, that's not a valid letter. Wait, let's look at: "उपसादयत्य॑थाध्वर्यूरङ्गिरुदैति३" Wait, why is there a cross/plus sign over 'रुदैति'? Ah! There is a small mark before 'ऽथर्वान्क्रतू-': Wait, look at: "रुदैति३ ۠ ऽथर्वान्क्रतू-" Wait, is that a cross? It looks like a dagger or an asterisk or footnote mark? Wait, there are footnote numbers: Footnote 1: १ in line 10. Footnote 2: २ in line 11. Footnote 3: ३ after रुदैति in line 14. Wait, what is that symbol after ३? It looks like a Maltese cross or a flower: ✠ or ⸭ or something? No, it's a raised mark, or is it footnote 4? Wait! Where is footnote 4? Look at footnote 4 at the bottom: "४ Some of the MSS. insert ग्रहं ।" Where is footnote 4 in the text? Ah! Footnote 4 is in line 16: "कर्माग्रयणाद्ग्रहार्दाग्रयणं४" - look, there is a small ४ after 'ग्रयणं'! Then what is that mark after 'रुदैति३'? Let's zoom in on line 14: